Sentences Generator
And
Your saved sentences

No sentences have been saved yet

1000 Sentences With "whorls"

How to use whorls in a sentence? Find typical usage patterns (collocations)/phrases/context for "whorls" and check conjugation/comparative form for "whorls". Mastering all the usages of "whorls" from sentence examples published by news publications.

type: All Declarative Interrogative Exclamative

structure: All Simple Compound Complex Compound-Complex

length: All <=10 words 10-20 words 20-30 words 30-50 words

The Changian loops and whorls are there, but they're rare.
Of course, medical marijuana isn't legal in North Carolina, where the Whorls live.
A conservator discovers a long-hidden insect buried in the artist's signature whorls of paint.
Elementary eyes, orifices indicating nostrils, and mouths are manifested in the looping whorls of paint.
Opal or pearl or plain rock, ugly except they were beautiful, their whorls and purple stains.
And the veins, knots and whorls in the wood won't always be concealed behind Sheetrock or paint.
Once it cools, you're left with a mold that replicates the intricate whorls and rivulets in your piece.
Not because of the outlines of the continents; those are comforting in their hooks, tails, splotches, and whorls.
Dupuy-Spencer has chosen an angle from which the soldier's hands are still visible among the whorls of metal.
The wall of the aneurysmal dome was thin enough to see mesmerizing turbulent whorls of blood flow with each heartbeat.
She and Mr. Adamcyk also fashioned some mystical balances when arranging Nono's stray polyphonic whorls in this surround-sound environment.
When he's really giving in to his ambitions, to his imagination, you can see that he prefers whorls to chunks.
Recalling Rorschach inkblot tests and preschool "butterfly" pictures, the black sweeps and whorls of the paintings are heavy with emotional significance.
These whorls then function kind of like mills, wherein surrounding worm clumps are gathered and incorporated into the growing worm-mat.
The books do mention of whorls and swirling patterns in dragon eggs and fabrics, but there's no greater meaning ascribed to them.
The series is a collection of 6 by 8-inch tintypes made with a collodion solution to create whorls, bursts, and lines.
Often the peculiar figures, dragons, and murky suggestions of animals are posed in caves and hollows, with wood whorls encircling the scenes.
At the start of his career, Mucha created and exploited this complimentary, mind-bending, complex cloisonnist graphic style based on gravity-defying whorls.
Press your thumb to a capacitive touch sensor that rapidly searches for a (relatively) unique pattern formed by the whorls of your fingertips.
Over this time, Ren's analysis shows, the whorls may have rotated ever so slightly, at about six tenths of a degree per year.
The roar of engines hammers your ears as the drivers slide their racers sideways through the turns, spinning up whorls of red dust.
The shell of Sinoennea has 6-7 whorls. The whorls are swelling.
The shell contains seven whorls. The two white, opaque whorls in the protoconch are rounded and smooth,. The intermediates whorls are rather convex, angular on the first whorls in the upper part, becoming rounder on the penultimate whorl and rather convex on the body whorl. The whorls are crossed by longitudinal ribs.
These first whorls of embryonic growth are usually referred to as the nepionic whorls.
The shell is chocolate brown to tan in color. There are typically five to six whorls. The spiral edge between the whorls, or suture, is quite distinct. The larger two or three whorls may have small ridges, while the remaining, smaller, whorls are completely smooth.
The shell is small, cylindric, terminating above in a conic spire, retaining all the whorls, rimate or perforate. The shell has 11-21 whorls, which are closely coiled. The first 1½ of whorls are smooth. The rest of whorls are smooth, striate or ribbed.
The spire is conical, its outlines a trifle concave;. It contains 8 whorls. The dextral apex is subimmersed. The first two whorls are quite convex, the following whorls slightly convex.
The length of the shell attains mm, its diameter mm. The ovate-fusiform shell is white. The shell contains 6 whorls, of which 2 smooth whorls in the protoconch. The subsequent whorls are slightly convex.
Calyces of up to nine whorls have been recorded, and up to 12 whorls of stamens have been observed.
The length of the shell attains 14 mm, its diameter 5 mm. The fusiform shell shows chestnut markings. It contains nine whorls of which 3½ subhyaline whorls in the protoconch. The subsequent whorls are elegantly rounded.
These large to giant ammonites have sharp and finely ribbed inner whorls and smooth outer whorls, without tubercles or lappets.
The protoconch is conical, small, acute, and consists of 2½ convex smooth and pinkish-brown whorls. The shell contains 8 to 10 whorls. The first very slowly, then rapidly increase. The whorls are straight or slightly convex.
Ulnar loops start on the pinky-side of the finger, the side closer to the ulna, the lower arm bone. Radial loops start on the thumb-side of the finger, the side closer to the radius. Whorls may also have sub-group classifications including plain whorls, accidental whorls, double loop whorls, peacock's eye, composite, and central pocket loop whorls. The system used by most experts, although complex, is similar to the Henry Classification System.
The length of the shell attains 10 mm, its diameter 4.5 mm. This fusiform species is more effuse and inflated than its congeners. The shell contains 9 whorls including 4 apical whorls. The apical whorls are beautifully decussate.
The subsequent whorls are ventricose and impressed at the suture. They are spirally crossed by 3 - 4 thick lirae. The whorls are longitudinally ribbed, fourteen on the body whorl. The ribs on the upper whorls are somewhat rougher.
The following whorl is spirally striate. The last two whorls are smooth. The six whorls are convex. The sutures are distinct.
The length of the shell attains 4.8 mm, its width 2.1 mm. (Original description) The thin shell is translucent-white. It contains 6 whorls, including the protoconch of 2 smooth convex whorls. The whorls on the spire are convex.
The length of the shell attains 4.3 mm, its diameter 2 mm. (Original description) The solid, yellowish shell has an elongate oval shape. It contains five whorls, including a pointed protoconch of two smooth whorls. The spire whorls are convex.
The granules on the cauda are large and are alternately white and pale brown. The shell contains probably 10 whorls (the apex is broken off). The remaining whorls of the protoconch are spirally striated. The next whorls are somewhat convex below.
Its color is yellowish, obscurely maculate with brown. The seven whorls are convex. The apical whorls is smooth, following 3 or 4 granulate whorls. The rest is densely spirally striate, with light incremental lines which decussate the lirulae, especially beneath.
Leaf whorls occur in some trees such as Brabejum stellatifolium and other species in the family Proteaceae (e.g., in the genus Banksia). In plants such as these, crowded internodes within the leaf whorls alternate with long internodes between the whorls.
The length of the shell attains 9.5 mm, its diameter 3 mm. The attenuate-fusiform shell has a slightly elongate spire. The shell contains eight whorls of which 3½ ochre-coloured whorls in the protoconch. The subsequent whorls are elegantly rounded.
They looked longer and were slower to approaching then the single whorled horses. Lundy ponies with 'left' whorls score highly on calmness, placidness, enthusiasm and friendliness, whereas those with 'right' whorls score highly on wariness, associated flightiness and unfriendliness. Ponies with two facial whorls are rated as significantly more 'enthusiastic' and less 'wary' than those with one or three facial whorls. Whorls on Thoroughbred horses may be physical indicators of a predisposition to perform repetitive abnormal behaviours, i.e. stereotypies.
The length of the shell attains 3.8 mm, its diameter 1.5 mm. (Original description) The minute, solid shell consists of 4½ whorls, including a blunt protoconch of 2 whorls,. The whorls of the protoconch are convex and apparently smooth, but microscopically granular, separated by a linear suture. It ends abruptly, and from within it issue the spirals of the first spire-whorls.
The sculpture of the shell is characterized by numerous fine spiral cords that are strongly beaded in the early whorls, and may become weakly beaded on later whorls. The apical whorls is very minute, smooth, and whitish. The next 2 whorls are encircled by 2 strong, articulated ribs. On the next whorl these ribs become beaded, and smaller beaded riblets appear above them.
Apertural view of Miralda diadema The white, small shell grows to a length of 1.8 mm. It is subovate, minutely umbilicated, with the summits of the whorls decidedly tabulated. The two helicoid whorls of the protoconch are moderately large, and about one-third immersed in the later whorls. The five whorls of the teleoconch are moderately rounded, decidedly tabulated at the summit,.
The apex consists of 2 tumid rounded whorls of nearly equal size, with a very slight suture. There are 8 whorls in all, of slow and regular increase. The body whorl is small, with a rounded conical base and a smallish snout. The whorls are angularly convex, with a slight contraction into the suture, both at top and bottom of the whorls.
The length of the shell attains 30 mm, its diameter 14 mm. The white, ovate-fusiform shell contains about eight whorls (the upper ones are broken off). The remaining whorls are concave on top and somewhat convex below. They contains slightly angulate whorls.
The length of the shell attains 4.5 mm, its diameter 1.5 mm. The fusiform shell is turreted and contains 6-7 whorls. The 1-2 whorls of the protoconch are glassy, shining. The subsequent whorls are ventricose and impressed at the sutures.
The about 8 whorls are flat above The sutures are scarcely marked. The first whorls of the apex when not smooth by erosion are spirally lirate. These lirae are dotted with red. The succeeding whorls are very closely, finely granulate in spiral series.
The length of the shell attains 16 mm. The shell has a brownish olivaceous color. It contains 9 whorls. The embryonal whorls are smooth.
The length of the shell attains 4.9 mm, its diameter 2.1 mm. (Original description) The solid shell has an elongate-oval shape. It consists of 6 whorls, including the pointed protoconch of 2½ smooth convex whorls. The whorls of the spire are slightly convex.
The length of the shell attains 20 mm, its diameter 8 mm. (Original description) A thin, delicately sculptured, acuminate-ovate shell with an acute spire. It contains 8½ whorls, including 2 smooth whorls in the protoconch. The other whorls are convex and obtusely angulate.
First whorls of shell are depressed, but then they became rounded and more compressed. Primary ribs are strong and they are usually bifurcating. Secondary ribs are more delicate. Tubercules are present on ventrolateral positions in younger whorls, but they are diminishing on outer whorls.
Ammonites belonging to this genus have evolute shells of small size. Inner whorls are cadicone, while outer whorls are subquadrate. On younger whorls, ribs are widely spaced and are of 2 types. Bold ribs have large ventrolateral tubercules, while fine striate ribs exist between them.
The protoconch is rounded, and presents two whorls. The shell as a whole has seven slightly convex whorls. Those whorls (including the body whorl) are ornamented by several posteriorly-oriented sharp spines. The outer lip is thick, and the aperture is relatively long and narrow.
The spire is purplish at the top. The 7 whorls are flat. The nucleus is nearly smooth, under the lens with a few rows of pits. The other whorls are covered with spirals, 2 on the upper whorls, increasing to 7 on the body whorl.
This protoconch is smooth and contains about 2.5 whorls. The whorls are rather inflated and have deeply marked sutures. The sculpture of the teleoconch has characteristic flat-topped spiral cords with rather weak axial ribs. These form a fine reticulate pattern on the upper whorls.
The length of the shell attains 5 mm, its diameter 2 mm. This is a solid whote shell with a short fusiform shape. It contains 8 whorls of which 2½ smooth, vitreous whorls in the protoconch. The subsequent whorls are much impressed at the suture.
The length of the shell attains 6 mm, its diameter 2 mm. This species has no very marked distinctive character. The white oblong-ovate shell contains 7 whorls, of which 3 smooth and convex whorls in the protoconch. The subsequent whorls are slightly convex.
The fasciole is inconspicuous. The whorls are moderately rounded. The aperture is about half the whole length. The axial sculpture consists of more or less obscure folds, stronger on the early whorls, seldom differentiated into distinct ribs, sometimes forming a rounded shoulder to the whorls.
The length of the shell attains 8 mm, its diameter 2.5 mm. The small shell has a fusiform shape. It contains 8 whorls, of which two or three vitreous and globular whorls in the protoconch. The subsequent ventricose whorls are considerably impressed at the suture.
The rather solid, conical shell has about 7 obtusely bi- angular shouldered whorls; the upper portion of each whorl is slightly concave to flat. The superior angle is prominent on the spire whorls. The early whorls have minutely beaded threads which become smoother and appear as fine smooth spiral ribs on later whorls. The height of the shell varies between 18 mm to 25 mm.
It shows long, spirally arranged peripheral spines on all five whorls (about equal to width of shoulder). The whorls are flat- sided. The early whorls show, on the upper surface, five beaded spirals, between which on the later whorls are intercalated one or more much smaller beaded or simple threads. These are crossed obliquely by small, sharp, imbricated lamellae, visible only under a lens.
The Marwari horse often exhibits a natural ambling gait, close to a pace, called the revaal, aphcal, or rehwal. Hair whorls and their placement are important to breeders of Marwaris. Horses with long whorls down the neck are called devman and considered lucky, while horses with whorls below their eyes are called anusudhal and are unpopular with buyers. Whorls on the fetlocks are thought to bring victory.
The length of the shell attains 10 mm. The rather strong shell has a turreted shape and is composed of 8 convex whorls. The two first whorls are punctuated, the two subsequent whorls are covered with fine and regular cross-linking. The last whorls are strongly reticulated by high, longitudinal ribs, arched, twenty in number on the body whorl, and regular cords, fairly prominent, more spaced at the top of the whorls where they from, on the crest of the coasts, a series of tubercles.
The length of the shell attains 15 mm, its diameter 2 mm. (Original description) The narrowly elongate shell is fusiform and very light yellowish white. It contains 9 whorls, of which about 1½ form a slightly swollen, smooth protoconch; The subsequent whorls are convex, separated by an undulated suture, which is accompanied by a spiral rib, conspicuous on upper whorls, becoming fainter lower on, nearly disappearing towards body whorl . The upper part of the whorls show a rather narrow excavation, wider but shallower on the lower whorls.
Its sides are slightly convex. The apex is subacute. The protoconch is conoidal, consisting of 3 convex spirally striate whorls. The whorls number 6 to 7.
The length of the shell attains 5.7 mm, its diameter 2.1 mm. (Original description) The narrow shell has a fusiform shape. It contains 6 whorls, including the protoconch of 2 smooth convex whorls, with simple suture. The whorls of the spire are convex, with simple suture.
Placenticeras has a very involute shell with slightly convex sides and a very narrow venter. Side are smooth or with faint sinuous ribs. Early whorls have umbilical tubercles that in later whorls appear higher on the sides. Earlier whorls normally have lower and fine upper ventrolateral clavi.
The length of the shell attains 9 mm, its diameter 4 mm. The small, whitish shell has a broadened fusiform shape. It contains 7 whorls, of which two vitreous and globular whorls in the protoconch. The shell shows a conspicuous central acute angle in the lower whorls.
The length of the shell attains 8 mm, its diameter 3 mm. The ovate-fusform shell has a pale reddish to white color. It contains 8 whorls, of which two convex, vitreous whorls in the protoconch. The subsequent whorls are slightly concave and subangulate in their middle.
The white shell has an elongate-conic shape. Its length measures 2.8 mm. The three whorls of the protoconch are smooth and heterostrophic, i. e. coiled in the opposite direction to the whorls of the teleoconch. The teleoconch contains 8 whorls separated by a pronounced suture.
The shell has a depressed conical shape and is deeply umbilicate. It contains six whorls. The three apical whorls are small and thin. The aperture is round.
It has a pale flesh color. It contains six whorls, including a minute subglobular nucleus. The suture is distinct, not appressed. The whorls are only moderately rounded.
The whole surface is microscopically spirally striate. The striae are coarser on the base. The 8 to 9 whorls are nearly flat. The upper whorls are pink.
There may be three sharp spirals on each of the four spire-whorls in a shell 8 mm. long, or two on the first and second spire- whorls, an intercalated third thread on the third whorl, and three on the fourth whorl. The shell may be shorter and more solid, with two very strong spirals on all the spire-whorls, and a weak intercalated thread on the fourth, with about twenty obsolete axial lirae on the second and third whorls, much less marked on the fourth. It may be short and wide, with only two spirals in the spire-whorls, but in the first and second, or first, second, and third whorls oblique axial lirae almost as valid as the spirals may cross and tuberculate these, and fade out in the later whorls.
The length of the shell varies between 7.5 mm and 9.2 mm. (Original description) The small, shiny shell has an elongate-conic shape.. Nuclear whorls The protoconch contains 1.5 well rounded, smooth whorls. The postnuclear whorls are moderately well rounded with strongly developed axial ribs, which begin weakly at the summit of the whorls and become strongest at about the anterior termination of the posterior third, again gradually weakening on the base and evanescing on the columella. These ribs on the early whorls are cusped at their highest elevation.
The length of the shell attains 18.6 mm, its diameter 4.5 mm. (Original description) The solid, narrow shell has an elongate-fusiform shape. It consists of 9 whorls, including the protoconch of 3 convex smooth whorls, with a deep impressed suture. The -whorls of the spire are convex, roundly angled below the middle in the early whorls, above it in the later, slightly adpressed below the linear suture.
It contains 12 whorls. The first two whorls are smooth, rounded, forming a somewhat prominent white papillary apex. The other whorls are slopingly convex, slightly impressed below the suture, spirally faintly grooved, obliquely obscurely plicated. The body whorl measures about 2.5ths of the entire length of the shell.
The spire contains 7½ whorls. The nucleus is probably smooth, but slightly worn. it is followed by three whorls, each with 3 strong, spiral lirae, of which the basal one is the strongest. They are beaded where they are crossed by concentric ribs, which disappear on the subsequent whorls.
The length of the shell attains 32 mm, its diameter 10 mm. The tender, dark white shell has a fusiform shape and is almost transparent. The shell contains 9 whorls, of which 1½ smooth, globose and vitreous whorls in the protoconch. The whorls are impressed at the suture.
The first whorl has rather distant ribs. The next whorls have 3 spiral lirae (fine linear elevations) and radiating ribs. The last 3 whorls contain 5 spirals and thinner radiating ribs, which make the shell cancellated. These ribs become lamellose (with flared axial projections) on the lower whorls.
The height of the shell attains 3.5 mm, its diameter 5 mm. The shell has a depressed conic shape. The nuclear whorls are white. The postnuclear whorls are marked with broad axial bands of brown which may extend entirely across the whorls, or may be interrupted in the middle.
The rather large shell has an elongate conic shape. Its length measures 12.5 mm. Its color is light brown. The early whorls have a light yellow color.. The whorls of the protoconch are decollated. The 11½ whorls of the teleoconch are appressed at the summit, which is slightly excurved.
The lines of growth are irregular, quite evident. The epidermis is thin, andolivaceous. The whorls are slightly shouldered. The protoconch and the first few small whorls are whitish.
Juvenile forms tend to be more evolute with more of the inner whorls showing, whereas mature forms tend to be more involute with outer whorls more strongly embracing.
The three whorls of the protoconch are always darker, usually brown buff. The shell contains 7½ whorls, including a protoconch of two whorls. Sculpture : Fine spiral grooves, crossed by still finer radials, ornament the protoconch. The third whorl has a prominent keel on the shoulder, beneath which is a fainter spiral.
The length of the shell attains 50 mm. (Original description) The solid, slender shell is pale brown or whitish. It contains ten whorls (the nepionic whorls lost) strongly appressed at the suture; anal fascicle close to the suture,. The whorls are smooth or faintly spirally striated, rather wide and excavated.
The length of the shell attains 13 mm, its diameter 5½ mm. The fusiform shell is elongated with impressed sutures. The high, pointed spire contains 7 whorls, of which two smooth whorls in the protoconch. The subsequent five whorls are convex, cancelled by numerous axial ribs and lamellar decurrent threads.
The length of the shell attains 13 mm, its diameter 5 mm. The elongate turreted shell contains 7 whorls. The two apical whorls are remarkably large. The faint nodules at the top of the whorls and the more distinct ones around the middle have faint dots of brown between them.
The length of the shell attains 5.25 mm, its diameter 2.25 mm. (Original description) The small, white, solid shell is shining, elongate-oval and blunt. It consists of 5 whorls, including a protoconch of 2 smooth convex whorls, and a very flatly convex apex. The spire-whorls are sloping convex.
The length of the shell attains 4.5 mm, its diameter 1⅔ mm. The white shell has a narrow-ovate shape. It contains 7 whorls of which 2 smooth and convex whorls in the protoconch. This species is especially remarkable for the fine yet very prominent thread-like lirations encircling the whorls.
Neoptychites includes extremely involute Ammonitida whose outer whorls have a high triangular section with a moderately rounded venter (the outer rim). Tho body chamber in adults is generally smooth, with a constricted aperture. The earliest whorls are smooth except for periodic constrictions; later juvenile whorls have numerous low ribs without tubercles.
The length of the shell varies between 31 mm and 62 mm. The white, slender shell has a fusiform shape It contains 9 -10 whorls. The whorls are angulated in the middle, concave in the upper portion and convex below. The whorls are bordered below the suture with a thickened margin.
The length of the shell attains 5.3 mm, its diameter 2.5 mm. The solid, yellowish white shell has a subfusiform shape. It contains 5 rounded whorls, including a large protoconch of two rounded polished whorls. The other whorls are strongly ribbed by distant curved ribs, about 12 on the spire.
The milk-white shell has an extremely slender, elongate conic shape. The length of the type specimen measures 5.8 mm. The whorls of the protoconch of the type specimen are decollated and the first three whorls of the teleoconch are probably lost. The remaining 9¼ whorls of the teleoconch are flattened.
The shell has a maximum length of 18.5mm. The spire is high and acute, consisting of two and a half tightly wound, convex nuclear whorls and five postnuclear whorls.
The milk-white shell has an elongate-conic shape. Its length measures 6.1 mm. (The whorls of the protoconch aredecollated). The eleven whorls of the teleoconch are well rounded.
The holotype fossil has a flat to low spired shell with 6.25 whorls preserved and a diameter of , though the adult whorls are not preserved. The spire is low, with the outer whorls being higher than the inner whorls, giving a sunken look to the shell center. Numerous fine suture lines curve across most of the shell, fading as the lines approach the keel. Each of the suture lines curve outward toward the aperture.
The length of the shell attains 4 mm, its diameter 1.5 mm. (Original description) The delicate, white shell contains 5 whorls, including a rather blunt scarcely mamillate protoconch of 2 convex whorls, with 7 spiral lirae, ending abrupthly at the first axial rib. The whorls of the spire are gradate, subconcavely sloping below the suture, with a sharp lira at the edge of the gradation. The whorls contract towards the lower suture.
The receptacle might become enlarged, elevated or flat. The outer whorls are inserted below the ovaries, and have valvate (overlapping) or imbricate (nonoverlapping) segments. Usually two to four persistent sepals that are distinct or connate (fused) at the base. Six petals in two unequal whorls of three with larger outer whorls and fleshier inner whorls that might share the same nectar glands, or six to fifteen petals, with impressed veins on their inner face.
A horse with two hair whorls on its forehead A hair whorl is a patch of hair growing in the opposite direction of the rest of the hair. Hair whorls can occur on animals with hairy coats, and are often found on horses and cows. Locations where whorls are found in equines include the stomach, face, stifle and hocks. Hair whorls in horses are also known as crowns, swirls, trichoglyphs, or cowlicks.
A leaf whorl consists of at least three elements; a pair of opposite leaves is not called a whorl. The morphology of most flowering plants is based on four types of whorls: # The calyx: zero or more whorls of sepals at the base # The corolla: zero or more whorls of petals above the calyx # The androecium: zero or more whorls of stamens, each comprising a filament and an anther # The gynoecium: zero or more whorls of carpels, each consisting of an ovary, a style, and a stigma A flower lacking any of these floral structures is said to be incomplete or imperfect. Not all flowers consist of whorls since the parts may instead be spirally arranged, as in the family Magnoliaceae. For leaves to grow in whorls is fairly unusual except in plant species with very short internodes.
The original description by Laseron (1958) (in French) states that there are ribs at the summit basal of the whorls. They are placed medially on the whorls and sometimes lacking.
The spire is depressed conoidal. Its outlines are convex, lower than the aperture. The yellowish- white protoconch consists of 2 convex smooth whorls. The 3½ convex whorls are rapidly increasing.
The seven whorls are plane, and transversely deeply lirate. The lirae are unequal. The whorls are subdistant, and angulate at the sutures. The body whorl is granulose around the umbilicus.
The white shell is rather solid and polished. Its length measures 9 mm. The teleoconch contains 11 to 12 flatly convex whorls. The last whorls are subangulated on the periphery.
The very regularly elongate conic shell is umbilicated, yellowish white. It measures 5.2 mm. The whorls of the protoconch are decollated. The six whorls of the teleoconch are moderately rounded.
The yellowish-white shell has an elongate conic shape. Its length measures 9 mm. The whorls of the protoconch are decollated. The nine whorls of the teleoconch are almost flattened.
The length of the shell attains 6 mm, its diameter 3 mm. (Original description) The small, dull white shell is fusiform, with a large smooth white protoconch of 1½ whorls and 3½ subsequent whorls. The suture is distinct. The whorls are moderately rounded, sometimes with a shoulder in front of the suture.
The length of the shell attains 11.5 mm, its diameter 3.5 mm. The white fusiform shell contains 9 whorls, of which two dull, shining whorls in the protoconch. The other whorls are convex with oblique, acute, longitudinal ribs (11 in the body whorl). Three spiral lirae form nodules when crossing the ribs.
The shell grows to a length of 11.5 mm; its diameter 3.5 mm. The fusiform shell contains nine whorls, of which two dull, shining whorls in the protoconch. The other whorls are convex with oblique, acute, longitudinal ribs (11 in the body whorl). Three spiral lirae form nodules when crossing the ribs.
The shell reaches a length of 7⅔ mm and a diameter of 3 mm. The ovate-fusiform shell is slighly pink with a reddish line around the body whorl. The shell contains eight whorls, including three smooth, convex whorls in the protoconch. The subsequent whorls are convex and somewhat shouldered above the middle.
These are flexuous, low, numerous, and form, at their enlarged base. continuous concentric arcs . Small, decurrent, regular, numerous lirae, traverse the whorls and surmount the ribs and undulate in their interstices over the entire surface. The shell contains 6 to 7 (?) whorls (the fractured top in the received specimen shows only 5½ whorls).
The length of the shell attains 5 mm, its diameter 3 mm. (Original description) The white shell is semitransparent. It contains whorls, including a smooth protoconch of whorls. The sculpture consists of longitudinal ribs, stronger on the earlier whorls, weaker towards the body whorl, which has about fifteen ribs extending to the suture.
The small, white shell grows to a length of 3 mm. It is elongate-conic, slender, slightly umbilicated. The at least two whorls of the protoconch are obliquely about half immersed in the first of the later whorls. The six whorls of the teleoconch are flattened, with strong tabulated and crenulated summits.
The 8 remaining whorls are nearly regularly convex, very slightly excavated below the conspicuous but shallow suture in the lower whorls, more so in upper ones. The sculpture consists in the upper whorls of thick axial ribs, disappearing on the sixth whorl, which is 9-ribbed. The lower whorls are nearly smooth, but are sculptured under the lens by fine, strongly waved growth lines, more conspicuous at irregular intervals. The whole shell is crossed by very faint spirals, scarcely visible on the upper part of whorls, stronger on the lower part, having the appearance of crowded lirae on the siphonal canal.
This keel becomes entire on the subsequent whorls. Above the shoulder, the whorls are slightly concave. The suture is appressed. There are about three faint spiral grooves on the concave surface.
The height of the shell attains 4 mm, its diameter 6 mm. The umbilicate shell has a conical shape. It has five, striated, ventricose whorls. The two apical whorls are white.
The dirty white shell is small, rather stout, and inflated. The shell grows to a length of 3.3 mm. The whorls of the protoconch are decollated. The teleoconch contains eight whorls.
The sculpture consists of 3-4 spirals on the earlier whorls, mainly collected below the sutures. On the body whorl, in addition, about 6 spirals encircle the base, and indications of others are seen between the two series. The second, third, and fourth whorls also show traces of longitudinal sculpture, which appears on the later whorls only as lines of growth. The shell consists of 11½ flat whorls, the last measuring just over half the length of the shell.
The elongate-ovate shell is turreted, shouldered, sutures crenulated, shining, hyaline to milk-white. It measures 3.4 mm. The nuclear whorls moderately' large, deeply obliquely immersed in the first of the succeeding whorls, only the last half turn of the last volution is visible from the side. The six post-nuclear whorls are rather high between the sutures, somewhat flattened, the summit of the succeeding whorls falls a little anterior to the periphery of the preceding one.
Primary ribs, which form on the umbilical and dorso-lateral part of the whorls, appear almost immediately. At first the primary ribs are dense but become wide spread on the intermediary whorls, then dense again on the last whorls. Tubercles are conical, usually raised as spines on the intermediary whorls, and are independent of ribs which curve around them. Secondary ribs become thicker on the body chambers of microconchs but thinner of body chambers of macroconchs.
The large, white, shining shell is similar in form to Odostomia (Amaura) avellana. It measures 9.6 mm and is one of the larger species within this genus. The three whorls of the protoconch are helicoid, quite elevated, deeply immersed in the first of the succeeding whorls, having their axis at a right angle to the axis of the later whorls. The six whorls of the teleoconch are well rounded, with a beveled shoulder at the summits.
Those two rows of dots on the superior part have a violet-rose color only on the first two whorls. This color nuance changes on the body whorl. Here the two upper rows of dots are white. The shell contains 7–8 whorls, of which 2–3 smooth and milky white whorls in the protoconch.
The length of the shell attains 11 mm, its diameter 3.5 mm. The ovate-fusiform shell contains nine whorls, of which two smooth and polished whorls in the protoconch. The third whorl has a fine reticulation. The other whorls slope down in their upper part in a tabulate manner; the inferior part is very flat.
The milk-white shell is very slender. Its length measures 6.4 mm. The 2½ whorls of the protoconch are small and form a moderately elevated, hehcoid spire, which has its axis at right angles to that of the succeeding whorls, and is not at all immersed. The 13 whorls of the teleoconch are moderately rounded.
The length of the shell attains 21 mm, its diameter 7.5 mm. The elongated shell resembles in form the recent Pyrgospira ostrearum (Stearns, 1872). The spire is acute with 2 whorls in the protoconch followed by seven subsequent whorls. The 2 earlier whorls show well-marked transverse ribs but little or no spiral sculpture.
The broadly elongate- conic shell is turreted and subdiaphanous. It measures 2.6 mm. The whorls of the protoconch are small, almost completely obliquely immersed, only part of the last rounded volution is visible above the first of the later whorls. The 5½ whorls of the teleoconch are somewhat inflated, well rounded and moderately shouldered.
The bluish white shell is moderately large, subdiaphanous, and shining. The early whorls are decollated. The later whorls are almost flattened and somewhat shouldered at the summits. They are ornamented with poorly developed, broad, low, almost vertical axial ribs which are strongest at the summit of the whorls and gradually grow weaker toward the periphery.
The broadly elongate shell has a grayish white color. The type specimen has lost its early whorls, the length of the 4½ remaining whorls of the teleoconch measures 1.5 mm. The whorls of the teleoconch are feebly rounded. They are marked by obsolete axial ribs which are best shown immediately below the appressed summit.
The nuclear whorls are small, numbering about two and one-half. They form a depressed spire, the axis of which is almost at right angles to the axis of the latter whorls. The six post-nuclear whorls are very wide, inflated, well rounded, faintly shouldered at the summit. The sutures are well marked and simple.
The laterals are of the usual form and bear cusps. The imperforate shell has a turbinate shape. The spire is conic with whorls rounded at the periphery. The upper whorls are spiny.
The radiating sculpture consists only of faint incremental line. The nucleus is lost. The earlier whorls have three nodulated spirals. The base of the shell and the whorls are a little convex.
The quite large, ashy shell has an elongate shape. the length of the shell measures 8.8 mm.(The whorls of the protoconch are decollated). The 13 whorls of the teleoconch are flattened.
The yellowish-white shell is moderately large and measures 3.9 mm. It is elongate-ovate. The nuclear whorls are decollated. The six post- nuclear whorls are well rounded, appressed at the summit.
The upper part of these whorls are concave. The fasciole is smooth, but for fine growth lines. This fasciole is bordered on the lower whorls by a liration, and the space between this and the spinous keel is faintly 2- or 3-lirate. The space between the keel and lower suture of the whorls is conspicuously grooved.
The spire is high, conical, subscalar. The apex is conically turbinate and consists of 4¼ small, convex, chestnut-coloured whorls, of which the last has a deeply sinuated lip-edge. They are scored with fine raised threads, which on the upper part of the whorls are curved and below are reticulated. There are 5½ whorls besides the embryonic apex.
The length of the shell attains 8.1 mm, its diameter 3.5 mm. (Original description) The shell is white. The protoconch contains two smooth whorls. The other whorls are moderately rounded, with closely appressed summits marked by weak, depressed, rather broad, slightly protractive axial ribs, of which 10 occur upon the first three whorls, 12 upon the fourth and penultimate.
The teleoconch contains 11 flattened whorls (the apex and perhaps two or three of the whorls of the teleoconch are lost). These whorls are increasing very regularly in size. They are slightly shouldered at the summit and separated by well-marked sutures. They are marked by faint lines of growth and numerous fine, closely spaced spiral striations.
The length of the shell attains 3 mm. (Original description) The minute shell shows an absurdly accurate resemblance to the large species of Turricula. It has inflated whorls, a constricted suture and a relatively long siphonal canal. The holotype has a slender brown protoconch of four long axially ribbed whorls and three and a half subsequent inflated whorls.
The length of the shell attains 9.6 mm, its diameter 3.5 mm. (Original description) The high and turreted light orange-yellow spire is subfusiform. The protoconch consists of 1½ whorls, the teleoconch 4 slightly convex whorls that are narrowly shouldered at the suture. The upper half of the whorls is smooth, and the lower half spirally grooved.
The milk-white shell has a conic shape. (The whorls of the protoconch are decollated.) The length of the shell measures just over 5 mm. The ten whorls of the teleoconch are moderately well rounded, and very slightly shouldered at the summit. They are marked by mere indications of obsolete ribs near the summit of the early whorls, only.
The color of the flowers is pale yellow to yellow. The flower is male or female, actinomorfic. Present Inflorescences composed of flowers, with perigonium. Female flowers: staminodes 12 in 4 whorls of 3 each, 1st and 2nd whorls eglandular, of 3rd and 4th whorls each with 2 glands at base; ovary superior; style elongated; stigma enlarge with 6 tepals.
The spaces between the threads and above the shoulder are very finely striate spirally. The shell contains 7 whorls, the first 1½ rounded, radially weakly costulate, several whorls following convex, rounded, the last 2 or 3 whorls angular at the shoulder. The body whorl bears a narrow, elevated, arcuate lip-varix. The aperture is narrow, Both.
The tepals are in groups of 6 to 9, in 2 or 3 whorls of 3 and sepaloid. If tepals are unequal will then usually possess 3 outer smaller rather than inner 3. This is occasionally absent in Litsea. The stamens are in multiples and whorls of 3, but 1 or more whorls are frequently staminodial or absent.
In older texts it is also called "nucleus". The protoconch may sometimes consist of several whorls, but when this is the case, the whorls show no growth lines. The whorls of the adult shell, which are formed after the protoconch, are known as the teleoconch. The teleoconch starts forming when the larval gastropod settles and becomes a juvenile.
The yellowish shell has an elongate-ovate shape with the early whorls spirally lirate and the later ones only obsoletely so. Its length measures 5.6 mm. The whorls of the protoconch are small, smooth, obliquely, almost completely, immersed in the first of the succeeding turns. The six whorls of the teleoconch are evenly well-rounded with appressed summits.
The length of the shell attains 6.5 mm, its diameter 2.5 mm. The white, strong solid shell has an oval shape. It contains 7 whorls, of which two polished whorls in the protoconch. The other whorls are convex and show seven stout rounded ribs continuous up the spire and extending to the base of the body whorl.
Color: the surface is dull and rough, yellowish, sparsely spotted on the spirals with a ruddy brown, which is almost crimson on the infra-sutural beads. The spire is high and conical, the whorls being barely rounded. The apex is small but flattened, the embryonic 1¼ whorls scarcely project. The seven whorls increase in size in a regular manner.
The conic shell is milk-white. Its length measures 4.2 mm. The whorls of the protoconch are smooth, deeply obliquely immersed in the first of the succeeding whorls, above which only a portion of the last two volutions project. The six whorls of the teleoconch are moderately rounded, slightly contracted at the sutures, feebly shouldered at the summits.
Compressed, moderately involute shell with keel and narrow venter. Cross section of whorl is elliptical, with rounded umbilical edge and sloping umbilical wall. Falcoid, or sinuous ribs are weak, or moderate on inner whorls, while on outer whorls, they are becoming striate, or these whorls are smooth. Diameter of complete adult shell is 120–250 mm.
The interior of the aperture is a little lighter: The upper whorls are more or less chalky. The protoconch is smooth and inflated. The later whorls are convex. The suture is deeply impressed.
The slender, white to transparent shell has a nearly cylindrical shape with an obtuse apex. Its length measures 1.7 mm. The whorls of the protoconch are intorted. The teleoconch contains 3½ rounded whorls.
The 3-4 apical whorls are ochreous and minutely decussate, the subsequent whorls are impressed at the suture. The wide aperture is ovate. The siphonal canal is short. The outer lip is thin.
The height of the shell attains 10 mm. The elevated, thin, rather solid shell has a conical shape. It consists of six whorls. These whorls and the base of the shell are flattened.
The spire is broadly conical, about 1½ times the height of the aperture. The outlines are lightly convex. The protoconch consists of 1½ smooth whorls, small and flattish. The teleoconch contains five whorls.
The color of the shell is green or dark brown- blackish. The shell has 6-7 convex whorls. Whorls are with upper spiral lines, some are obsolescently sculptured. The last whorl is swollen.
The elongate-conic shell is bluish-white. It measures 2.9 mm. The whorls of the protoconch are decollated. The seven whorls of the teleoconch are very slightly rounded, separated by deeply channeled sutures.
The large shell large measures 7.5 mm. It is umbilicated, yellowish-white. The nuclear whorls are decollated. The six post-nuclear whorls are decidedly, slopingly, tabulatedly shouldered at the summit, otherwise moderately rounded.
The antennae show dense setae, each segment with separate whorls.
The loosely held whorls of flowers grow on branched inflorescences.
The length of the shell attains 16 mm; its diameter 5 mm. (Original description) The slender, white, acute shell has seven or eight moderately convex whorls separated by a very distinct suture. The protoconch is swollen, twisted, consists of two whorls, the second spirally threaded. On about three of the subsequent whorls these threads are developed into two or three major cords between the periphery and the suture, becoming on later whorls obsolete, or this sculpture in other specimens may be obsolete.
The size of the shell varies between 18 mm and 40 mm. The yellowish brown shell contains about seven whorls exclusive of the (lost) protoconch. The spire is acute. The whorls are markedly shouldered.
The length of the shell attains 21.5 mm, its diameter 10.1 mm. (Original description) The fusiform shell has an acute spire. The rounded whorls are closely spirally striated. The spire whorls are obliquely plicated.
The uppermost whorls are fretted. The colour of the shell ispale purplish red. The spire is short, ending in a somewhat abrupt and blunt point. The shell contains 5–6 whorls, convex, regularly increasing.
The shell is small, bluish-white, and semi-translucent. It has a very irregularly elongate-conic shape. The early whorls are decollated. The four remaining whorls are almost flattened, and appressed at the summit.
The spire is high and conical. Its profile lines are cut into zigzags by the projecting keels of the successive whorls and the contracted sutures between. The apex is broken. Only 5¼ whorls remain.
The height of the shell attains 23.2 mm., its diameter 26.9 mm. The nacreous white shell is rather large for the genus and contains 3½ rapidly enlarging whorls. The whorls have a smooth surface.
The height of the shell attains 2 mm, its diameter 5 mm. The shell contains 5 whorls and a minute nucleus. The whorls increase rapidly in size. The body whorl contains three acute keels.
The aial ribs number 13 on the later whorls. These are narrow, rounded, undulating the whorls from the anal fasciole to the anterior suture. but evanescent on the columella. The spiral sculpture is elaborate.
The large, solid shell is depressed. It contains five to seven whorls. It is light brown with a few touches of white transverse to the whorls on the carina. The umbilical rib is white.
Later whorls show spiral striae anteriorly on whorls and above shoulders.Annals of the South African Museum Vol. XLVIII (1963-1974) page 11Iredale, T., 1927. A review of Australian helmet shells (family Cassididae- phylum Mollusca).
The shell is minute, imperforate, turreted and unicarinate. The carina is modified into spinous processes on last three whorls. The carina is darker colored than balance of shell. The shell has 5-5½ whorls.
The shell is of medium size, measuring 4 mm. The shell is narrowly elongate-ovate, umbilicated, yellowish-white. The nuclear whorls are decollated. The five post-nuclear whorls lie rather high between the sutures.
These are closely and very finely cancellate. The subsequent whorls are slightly ventricose and almost smooth. The very delicate and irregular spiral striation across the whorls is almost evanescent. The body whorl is smooth centrally.
The whorls are weak shouldered. They lack obvious varices or only the terminal varix is developed. The outer lip is flared and slightly thickened, with weakly shouldered whorls. The anterior siphonal canal is moderately long.
The length of this yellow shell measures 3 mm. Its shape is elongate-ovate. The whorls of the protoconch are immersed in the first whorl of the teleoconch. The teleoconch contains 4½ moderately rounded whorls.
The length of the shell attains 8 mm. The thin, white shell is vitreous and subpellucid. It contains eight whorls, obtusely narrowly shouldered above, covered by fine spiral striae. The upper whorls are longitudinally ribbed.
The small, whitish shell grows to a length of 3 mm. It has a subturbinate shape with four rapidly enlarging whorls. The minute protoconch is smooth. The whorls of the teleoconch show an axial sculpture.
The number of whorls range between 5.5 and 6. The last two whorls increase more rapidly. The last whorl is weakly angulated. It does not descend near the main opening of the shell, the aperture.
The length of the shell varies between 1.2 mm and 4 mm. The smooth, shining shell is narrowly umbilicated. It contains 4½ tumid whorls with a deep suture. These whorls are rapidly increasing in size.
The spire is conical, as high as the aperture and a little convex. The apex is acute. The protoconch is very small, consisting of 1½ smooth, slightly convex whorls. The six whorls are slightly convex.
The projecting whorls of the small protoconch are transverse to the axis. The 12 whorls of the teleoconch are slightly convex. There are about 20 transverse ribs. These are rather stout, nearly perpendicular, and rounded.
The shell grows to a length of 6.5 mm, its diameter 2.5 mm. (Original description) The small shell is whitish. It has a smooth protoconch containing 1½ whorls. The five subsequent whorls are moderately rounded.
They are borne in whorls of 3 to 7 around the stem. The flowers grow on long stalks from the leaf whorls. The five-parted flower is yellow with a reddish centerLysimachia quadrifolia. Freckmann Herbarium.
The sculpture consists of remote, oblique, axial ribs, conspicuous in the upper whorls, fainter lower on, disappearing on the back of the body whorl. They form tubercles below the excavation, which in the upper whorls bear short plicae, just below the suture. The lower part of the whorls is crossed by very numerous spiral striae, conspicuous in upper whorls, faint on the last one, but stronger towards and on the siphonal canal. The aperture is elongately-oval, angular above, with a wide siphonal canal below.
The whorls of the teleoconch are ventricose. The conspicuous spiral, raised lirae (7 at the penultimate whorl, 18 on the body whorl) extend at unequal intervals over the whole surface of the lower whorls. They are almost unbroken on the ventricose body whorl, while crossed frequently above by irregular liral riblets on the upper whorls. The aperture is rotund-ovate.
The length of the shell attains 33 mm, its diameter 13 mm. The spire of the rather solid shell is composed of 9 whorls, separated by a well marked suture. The whorls of the protoconch consist of curved longitudinal ribs and are, at the bottom, finely reticulated. A little below the middle of the subsequent whorls, occur a series of longitudinal, tuberculous plicae.
The shell contains 13 whorls . Its colour is grey-buff, maculated with chestnut at the sutures. Sculpture:—The radials are oblique, wide-spaced, consisting of low peripheral nodular riblets, ten on the penultimate, and eleven on the body whorl . On the earlier whorls the ribs ascend the spire perpendicularly and continuously, but on the lower whorls they are less developed and less regular.
The length of the shell varies between 7 mm and 12 mm. (Original description) The yellowish shell shows pale brown flammules. The high and slender shell has a protoconch of three whorls and five or more subsequent whorls. The sculpture on the early whorls consists of two very strong elevated threads, at a later time there are two intercalary, not quite so strong.
The length of the shell attains 9mm, its diameter 3.25 mm This is a peculiarly milky white, oblong-gradate species. It contains eight whorls of which two vitreous whorls in the protoconch. The sculpture is, as in most Daphnella, elaborately cancellate as regards the protoconch. The whorls next to this are irregularly varicose-costate, and are crossed by delicate non- gemmuled spirals.
The nucleus is obsolete. The next whorls contain spirals and radiating ribs, forming small spines when they cross. On the last three whorls the ribs disappear and only the spirals remain, the uppermost being in the last 5 whorls, conspicuously the largest. These lirae are closely beset with compressed spines, which resemble squamae, with very fine growth striae in the interstices.
The length of the shell attains 3.1 mm, its diameter 1.4 mm. The small shell is golden brown. The protoconch contains 1½ smooth whorls, forming a rather elevated apex. The subsequent whorls are well rounded, shouldered at the summit, and marked by strong spiral cords, of which 3 occur upon the first two whorls between the sutures, and 4 upon the penultimate whorl.
The shell contains 7 whorls, including a protoconch of whorls. Sculpture: The protoconch is at first smooth, afterwards ornamented by numerous fine arcuate riblets, which end abruptly. The adult whorls carry from eight to nine prominent spaced ribs. These are crossed by distant spiral threads, of which there are twenty on the body whorl, and six on the penultimate whorl.
The very slender shell has an elongate-conic shape. Its length measures 8.3 mm. Its color is wax-yellow with a broad, brown band that on the early and the later whorls extends over the anterior half, between the sutures, while on the middle whorls it covers fully two-thirds of that space. The whorls of the protoconch are decollated.
The shell is rimate, turreted, irregularly and very finely striate, of reddish-brown color, glossy. The shell has 6 whorls, that are slowly increasing and rather convex. The first 3 whorls form a blunt summit which is about ⅓ the length of the shell. The last 3 whorls are of nearly equal height and form the remaining cylindric part of the shell.
The 2¼ nuclear whorls are depressed helicoid. The postnuclear whorls are evenly rounded, marked with two, broad, spiral bands, which extend over the anterior half of the whorls between the sutures, where they appear as two turns of a bandage. The periphery of the body whorl is marked by a moderately strong spiral keel which renders it angulated. The sutures are feebly constricted.
At this point, the 5th and 6th ribs become discolored and turn white, especially at the opening of the outer lip, where the white coloring broadens and extends more or less. The shell contains 6 whorls. The 1½ embryonic yellow whorls are rounded and smooth. The next whorls are oblate-convex, compressed at the suture and very briefly angular at the top.
The length of the shell attains 6 mm, its diameter 2.4 mm. (Original description) The milk white shell contains 6 whorls. The 2½ whorls of the protoconch are dextral, forming a low apex. The first whorl is small and smooth, the second much larger, marked by very slender riblets and fine spiral lirations which increase in strength with the growth of the whorls.
The colour of the shell is white. The spire is elevated conic, turriculate, nearly 1½ times the height of the aperture. The protoconch is globular, of 1½ smooth whorls, the nucleus broadly rounded. The shell contains 6 whorls, regularly increasing, with a high sloping shoulder, the keel on the spire-whorls near the middle, flat above and below the keel.
The yellowish-white shell is broadly conic. Its length measures 4.4 mm. The protoconch is small with two whorls which increase extremely rapidly in size and are obliquely placed. The six whorls of the teleoconch are very strongly shouldered, marked by three very strong lamellar spiral keels on the first and second and four on the succeeding whorls between the sutures.
The regularly conic, yellowish white shell is umbilicated. It measures 4 mm. The whorls of the protoconch are apparently planorboid, very obliquely, almost completely, immersed in the first of the later whorls, only a portion of the last volution being visible. The six whorls of the teleoconch are rather high between the sutures, slightly rounded (almost flattened), and subtabulately shouldered at the summits.
The shell has an elongate-conic shape. Its length measures 11.5 mm. Its color is light wax yellow, with a supra and subperipheral light chestnut band, separated by a very narrow, dark wax yellow peripheral zone. (The whorls of the protoconch and probably the first two whorls of the teleoconch are decollated.) The nine remaining whorls are situated rather high between the sutures.
The length of the shell attains 14.4 mm, its width 5.2 mm. (Original description) The solid shell is white, high, narrow, conical, with a blunt apex and a rounded base. It contains 9½ whorls, including a protoconch of 2½ convex whorls, the first two smooth, the rest faintly subdistantly axially plicate, ending abruptly. The whorls of the spire are convex.
The shell contains 6½ whorls. The 2½ protoconch whorls are convex and smooth. The third whorl is convex and is slightly obliquely lirate. The others have a broad sloping shoulder and a greatly rounded anterior portion.
The length of the shell attains 6 mm, its diameter 2.5 mm. (Original description) The small, white shell has a hexagonal shape. The blunt glassy protoconch consists of whorls. The teleoconch contains about five subsequent whorls.
The length of the shell attains 7 mm. (Original description) The minute shell has a blunt protoconch. The second whorl shows a peripheral keel. The seven subsequent whorls are moderately rounded, axially and spirally sculptured whorls.
The length of the shell attains 4.5 mm, its diameter 1.25 mm. (Original description) The minute shell is thin. It contains six whorls, including the protoconch. The protoconch consists of whorls, smooth, with deep impressed suture.
The length of the shell attains 9.5 mm, its diameter 3 mm. The white shell is oblong and slightly twisted. It probably contains eight whorls (the protoconch is broken off). The remaining whorls are rather flat.
The length of the shell attains 6 mm, its diameter 2 mm. The small, pale, straw-white shell has a fusiform shape. It contains eight whorls. The three whorls in the protoconch are ochreous and smooth.
The length of the shell attains 4 mm, its diameter 2 mm. This is a very characteristic minute shell containing 5 whorls. The protoconch is smooth. The angular whorls of the spire form a tabulated spire.
The length of the shell attains 10 mm, its diameter 3⅓ mm. (Original description) The elongate, shining shell is horny brown. It contains 8 whorls. Two whorls are apical transversely keeled and angled round the middle.
The rather stout shell is of moderate size, measuring 4 mm, and irregularly coiled. Its color is dead white. The small protoconch is transverse to the axis, with projecting whorls. The teleoconch contains nine flattened whorls.
The length of the shell attains 13 mm, its diameter 5½ mm. The small, whitish golden yellow shell has an ovate-fusiform shape. It contains 6⅓ whorls. The convex whorls are slightly excavated near the suture.
"Species summary for Candidula arganica". AnimalBase, last modified 4 January 2014, accessed 12 December 2014. There are whorls which are, to some extent, convex in shape. The last whorl is not much broader than precedent whorls.
The base of the shell shows narrow radiating stripes or tessellations of the same shade. The about six whorls are planulate or slightly concave above. The whitish apex is eroded. The succeeding whorls are spirally beaded.
The white, shining shell measures approximately 8 mm. The twelve whorls of the teleoconch are scarcely convex. The whorls of the spire show three revolving ribs. The body whorl has eight ribs, the lower ones smaller.
The periostracum is thick, and the color of the periostracum is dark brown or black. The shell has about 20 whorls. The apical whorls may be eroded in older snails. The aperture is ovate and white.
Later, or outer, whorls are smooth with convergent sides. The outer rim, or venter, is rounded. Embracement of previous whorls by the next is slight to mild. The umbilicus is rather wide, with an abrupt edge.
The 1½ nearly flat whorls of the protoconch are prominent, slightly oblique and slightly projecting. The eight whorls of the teleoconch are moderately convex. The suture is distinct, and straight. The transverse ribs number about 18.
The sinistral or dextral shell is imperforate, conic-oblong and solid. The shell has 6 whorls. The spire is slightly convexly-conic and the apex subacute. The suture is margined and the whorls are slightly convex.
The length of the shell attains 7.5 mm, its diameter 2.75 mm. This small, yellowish shell is turriculated. The shell contains 16 whorls, including three whorls in the conical protoconch. The apex is sharp and vitreous.
The nucleus is slightly umbilicate. The postnuclear whorls are nearly smooth. They show very fine curved growth striae. The whorls are nearly straight, but slightly convex in the upper part, slightly concave near the lower suture.
Oecoptychius is an eccentrically coiled, dwarf ammonite. Inner whorls smooth, spheroidal; outer whorls with fine biplicate ribbing, ventral groove, and an acute elbow at half a whorl before the aperture; peristome contracted, with outwardly directed lappets.
The short, yellowish white shell has a conic shape. (The whorls of the protoconch of the type specimen are eroded). Its length measures 5.6 mm. The 5½ whorls of the teleoconch are well rounded, slightly overhanging.
The height of the shell attains 16 mm, its diameter 5.5 mm. (Original description) The slender, acute shell is pale brownish. The protoconch is smooth regularly increasing containing 2½ whorls. The teleoconch contains 8½ subsequent whorls.
The white, small shell has a decidedly rissoid shape. Its length measures 1.3 mm. The whorls of the protoconch are intorted. The teleoconch contains 2 to 2 ½ well-rounded whorls, covered with numerous rib-like striae.
The whorls of the teleoconch are keeled, the keel running in the 2 uppermost whorls a trifle above the linear suture, in the following whorls it is coalescing with the suture. On the body whorl it has the appearance of a blunt, rounded rib, with a slight groove above it. The upper whorls are nearlystraight, the last 2 ones slightly convex, the body whorl rapidly contracted below the keel. The sculpture consists of numerous raised spiral striae, rather fine in upper part of whorls, very fine on a narrow zone just above the keel, coarser on the keel, much coarser on the basal part of body whorl and on the siphonal canal, which is long and slender.
The length of the shell attains 17.5 mm, its diameter 6.25 mm. (Original description) The thin, delicate shell is elongated, fusiform, waxy white. The protoconch contains three whorls, generally decorticated. The shell contains ten whorls in all.
The size of an adult shell varies between 18 mm and 34 mm. (Original description) The solid, slender, acute shell is pure white. The simple polished protoconch contains 1½ whorls. It is followed by nine normal whorls.
The shell grows to a length of 6.6 mm, its diameter 3 mm. (Original description) The minute shell minute is white. The blunt, smooth protoconch contains 1½ to 2 whorls. The five subsequent whorls are prominently sculptured.
The small, white shell has a biconic-claviform shape. Its length attains 8.7 mm, its diameter 3.7 mm. The protoconch consists of two rounded and smooth whorls, the teleoconch of 5 whorls. The shoulder is relatively weak.
The shell grows to a length of 16 mm. (Original description) The small, acute shell is whitish. It has a polished, smooth, trochiform protoconch of about 2½ whorls. The teleoconch contains the subsequent eight or more whorls.
The white, shiny shell has ta slender, elongate-conic shape. The length of the shell varies between 1.8 mm and 1.8 mm. The whorls of the protoconch are helicoid. The teleoconch contains 4½ to 5 flat whorls.
The eight whorls are a little convex. They are obsoletely sculptured with incremental striae. The suture has a series of fine short folds on each side. Three last whorls are covered with a median series of tubercles.
For terms see gastropod shell The 1.1-1.6 x 2.2-2.7 mm. shell has 3.2-3.3 whorls. Whorls are slightly angular at the periphery with deep sutures. The shell is flat with regular and widely spaced ribs.
Stanford University Press: Stanford, CA. The spire is low-conoidal. The minute apex is subacute, and spirally striate ; when perfect, the apical whorls are variegated. The 6 whorls widen rapidly. They are nearly plane and sloping above.
The protoconch consists of two small smooth helicoid whorls. Sculpture:—The first adult whorl shows numerous small radial riblets. On the subsequent whorls the ribs are spaced seven to a whorl. They are continuous, perpendicular, and elevated.
The brownish yellow shell has an elongate-conic shape. Its length measures 5 mm. (The whorls of the protoconch are decollated). The 7½ whorls of the teleoconch are very slightly rounded, and feebly shouldered at the summit.
The dextral shell is ovate and somewhat ventricose with convex whorls margined round the upper shell. The shell has six whorls. The spire is rather short and obtuse at the apex. The columella is callous and twisted.
The teleoconch has up to 3 smooth, inflated, convex, rapidly descending whorls. The suture has abutting whorls. The shell surface is smooth, glazed, and lacking spiral and axial sculpture. The aperture is ovate, narrow posteriorly, broad anteriorly.
The elongate-ovate shell is light yellow. It measures 5.5 mm. The nuclear whorls are decollated. The six post-nuclear whorls are inflated, slightly rounded in the middle, more so toward the suture, and the appressed summit.
The small shell measures 3 mm. It is elongate-ovate, somewhat translucent, bluish-white. The nuclear whorls are small, very obliquely immersed in the first of the succeeding turns. The five post-nuclear whorls are well rounded.
The shell contains seven or eight whorls, slightly ventricose, uniformly spirally lirate. The interstices when viewed with a lens are beautifully decussate. The aperture is wide. The outer lip is thickened, transversely striate, as are the whorls.
The upper 3-4 whorls are blackish, the following are dim bluish.
The length of the shell varies between 20 mm and 30 mm. (Original description) The shell is shortly fusiform, rather smooth, light buff, with a few red-brown spots below the suture of lower whorls and one faint band on those whorls and 3 on the body whorl, the siphonal canal being tinted with the same colour. The shell contains 9 whorls, of which 2 upper ones form a smooth, convexly-whorled nucleus. The subsequent whorls are convex, 4 or 5 post-nuclear ones slightly angular below, lower ones becoming more regularly convex.
The spire is acute and slender. The whorls are moderately rounded. The suture is distinct, not appressed. The spiral sculpture consists of a few obscure threads on the back of the siphonal canal and on the apical whorls.
The size of the shell varies between 1.8 mm and 2.5 mm. The small shell has a broadly conical shape. The 4½ whorls are rounded and increase rapidly in size. Colour: adult whorls dull white, protoconch dark purple.
The small shell measures 2 mm. It is oblong, ovate, milk- white. The nuclear whorls are decollated. The five post-nuclear whorls are rather high between the sutures, moderately rounded, strongly shouldered at the summit, which is subtabulated.
The sutures are impressed. The 6 whorls are a little gibbous just below the sutures, causing the spire to be somewhat turreted. The whorls are encircled by numerous fine unequal lirulae or striae. The periphery is obtusely angular.
The size of the conical shell attains 10 mm. The six whorls are covered with brown checkered spirals. The whorls are bicarinate but the body whorl is tricarinate. The base of the shell is polished and slightly convex.
It contains eight whorls. The first ones are flat, the others somewhat concave. They are separated by a shallow suture. The embryonic whorls are smooth, the others are decorated with decurrent spiral striae (six on the penultimate whorl).
The length of the shell attains 4.5 mm, its diameter 2 mm. The white, minute shell has an ovate-fusiform shape. It contains 8 whorls, of which two vitreous whorls in the protoconch. The oblique aperture is ovate.
The protoconch is small, acute, and consists of two convex, light- brown, and finely spirally striate whorls. The six whorls are flatly convex. The body whorl is keeled at the periphery. The base of the shell is convex.
The apex is blunt. The spire is short with 6 1/2 whorls, including the protoconch. The suture is well defined on the later whorls and becomes strongly channeled at the aperture. The outer lip is anteriorly expanded.
The shell size attains 8 mm, its diameter 3.6 mm. The small shell has a biconic-fusiform shape with a small, but sharp protoconch. The five teleoconch whorls are convex. The whorls are slightly concave at the shoulder.
The dextral shell is ovate-oblong, spiro-conic, solid, striatulate. The shell is more obsolete toward the apex and with slightly convex whorls. The shell has six whorls. Shell colors are glossy white ornamented with varying brown bands.
The white, solid, semi-opaque shell has an orbiculate-conoidal shape. The whorls are almost conical and the base is convex containing a large callus. The whorls are obsoletely transversely striated. The round aperture has a continuous peristome.
The shell contains seven whorls with much impressed sutures. The whorls are irregularly spirally deeply lirate. The lirae are conspicuously sulculose with triangular blotches of black-brown painting. The smooth base is plane but triangular at the periphery.
The small shell measures 4.4 mm. Iti is elongate ovate, yellowish white. The nuclear whorls are small, almost completely immersed in the first of the succeeding turns. The five post-nuclear whorls moderately well rounded, with rounded summits.
The elongate-ovate shell is semitranslucent. Its length measures 2 mm. The whorls of the protoconch are deeply obliquely immersed, the tilted edge of the last only being visible. The whorls of the teleoconch are rounded, somewhat inflated.
The very small, pupiform shell is milk-white. It measures 1.5 mm. The whorls of the protoconch are completely immersed. The five whorls of the teleoconch are flattened, slightly contracted at the sutures, moderately shouldered at the summit.
The milk-white shell has an elongate-conic shape. Its length measures 6 mm. (The whorls of the protoconch are decollated). The nine whorls of the teleoconch are well rounded, slightly excurved at the summit, and weakly shouldered.
The white shell is ovate, conic, subvitreous, and shining. It measures 2.2 mm. The 1½ whorls of the protoconch are obliquely immersed in the first of the succeeding turns. The 4½ whorls of the teleoconch are well rounded.
The 6½ remaining whorls are separated by a conspicuous, simple suture. They are convex and slightly excavated at their upper part. The sculpture consists of numerous, very irregular, spiral striae, more conspicuous at the base of shell and siphonal canal, scarcely traceable in the excavation. The upper whorls show a peripheral row of obtuse tubercles, which in the uppermost whorls have the character of ribs.
The length of the shell attains 4 mm, its diameter 1.7 mm. (Original description) The elongate-oval shell consists of 5 whorls, including a blunt protoconch of 2 convex whorls,. These whorls in the protoconch are apparently smooth, but microscopically minutely punctate from crowded spiral and axial lirae ; the latter become more conspicuous just before the abrupt termination of the protoconch. The suture is simple and impressed.
Otherwise the spiral sculpture, especially on the latter whorls, comprises sharp narrow grooves with wider flattened interspaces which become more cordlike on the earlier whorls and the base. The whorls are moderately rounded with no indication of an anal fasciole. The suture is distinct but not appressed. The aperture in the type specimen is elongate ovate with a simple columella and a thin sharp outer lip.
The length of the shell attains 14 mm, its diameter 5.5 mm. The biconic-claviform shell has about two whorls in the protoconch and five weakly convex whorls in the teleoconch. The shell shows 10 to 12 axial ribs on the early whorls and 9 to 11 on the penultimate whorl. The ribs only occupy the lower two-thirds of the whorl, the remainder being simple.
The shell contains 7 whorls. The two whorls in the protoconch are globose, microscopically reticulated, but appearing smooth under an ordinary lens, rather large. The subsequent five are convex, a little constricted beneath the suture, and spirally ridged and striated. The upper whorls have four or five principal lirae, the uppermost falling just beneath the slight constriction, and the others below at equal distances.
The length of the shell attains 9 mm, its diameter 3¾ mm. (Original description) The thin, white shell has a biconical shape. It contains about 10 whorls, of which about 4 form a red- brown protoconch, with convex whorls, of which about 1½ upper whorls are smooth. The other ones show angular riblets, strongest near the upper suture, crossed in their lower part by fine, oblique striae.
The whorls in the protoconch are minutely reticulated. The rest are convex, divided by an oblique suture, longitudinally costate, and transversely closely lirate. The ibs are rounded, a little oblique, 16 on the penultimate, and fewer on the preceding whorls. The spiral lirae are equally elevated on and between the ribs, about 12 on the penultimate, and, like the ribs, gradually fewer on the upper whorls.
The spire is rather high, conical, scalar and sharp. The protoconch consists of 3½ very small turbinate whorls, of which the extreme tip is immersed and tabulate. They are chestnut- coloured, and are scored with excessively fine threadlets, which are straight and longitudinal above but cancellate on the lower part of the whorls. The last of these embryonic whorls ends with a deeply sinuated outer lip.
The spire contains 11 convex whorls; separated by a wide and deep depression with the suture in its bottom. The first two whorls are smooth and shining, forming a blunt apex. The next whorls show revolving striae and 7 - 8 axial ribs, often with small brown spots, terminating in the middle part of the canal. This siphonal canal is short, wide and somewhat notched.
The early whorls are flattened, the later ones well rounded. All have the summit feebly shouldered. The whorls are ornamented by very regular well rounded axial ribs which become somewhat enfeebled toward the summit. These ribs have a decided protractive slant on the early whorls, while on the middle turns they are vertical, and on the later volutions they have a decidedly retractive slant.
The two protoconch whorls are large, smooth, and white. In the third and fourth whorls the spiral lirations are about two or three in number, one encircling the angulation and the rest below it. They are rather stronger than the longitudinal ribs (about 20) and give the whorls a cancellated aspect. In the body whorl these lirae are much finer, very numerous, and closely packed.
The height of the shell attains 1.5 mm and its diameter 4 mm. The white shell has a plane-discoidal shape with 5 whorls. The species is beautifully cancellate and sculptured, though more or less smooth below the periphery and around the narrow but deep umbilicus. The whorls are all channeled at the sutures, very distinct (seen with a lens) on the two apical whorls.
The length of the shell attains 6.3 mm, its diameter 2.5 mm. This small species has 6½ whorls, of which the first 3 comprise the embryonic shell. These whorls are smooth and convex until the last half-whorl, which has close, fine backwardly arched riblets. Subsequent whorls have slightly protractive rounded ribs, eleven on the penultimate whorl, rather high, and compressed below the sutures.
The shell is umbilicated, ovate, conic above, moderately solid, brown with a buff line at the periphery, very delicately sculptured with lines of growth, and sometimes has low wrinkles and fine impressed spiral striae. The spire of the shell is conic. The apex is obtuse. The sculpture of the nepionic whorls (the whorls immediately following the embryonic whorls) has superficial vermiculate (worm-like) wrinkles.
The milk-white shell has a regularly elongate-conic shape. It measures 6.7 mm. The whorls of the protoconch are small, obliquely almost completely immersed in the first of the succeeding whorls, only the periphery of the last two being visible. The nine whorls of the teleoconch are rather high between the sutures, very slightly rounded, slightly angulated at the periphery and scarcely at all shouldered.
Its shell is relatively small for the genus, around 11 mm in length, slender shaped, thick, solid and semi-fusiform, early four whorls elate, acuminate spire, well swollen periphery. The body whorl is half of the shell length, with a protoconch of about 1.5 whorls. The teleoconch consists of around 5 to 6 convex whorls with a tall spire. Narrow axial ribs reach from suture to suture.
The color of the shell is wax yellow on the early whorls, ranging to chestnut brown on the last. Its length measures 3.7 mm. The 2½ whorls of the protoconch form a depressed helicoid spire, whose axis is at right angles to that of the succeeding turns, in the first of which it is about one-third immersed. The seven whorls of the teleoconch are well rounded.
The fusiform shell consists of ten whorls. The angular whorls are crossed by delicate, spiral striae and longitudinal obtuse ribs. The whorls are tuberculated in the middle, the tubercles developing from more or less indistinct oblique folds or ribs, everywhere closely encircled by striae. The dark fulvescent shell shows a banded white zone that passes over the nodules upon the angle in the center of each whorl.
The aperture is white and the lip is bordered with dark brown. Faint spiral striae sculpture the embryonic whorls, and later whorls are convex and irregularly wrinkled in the direction of growth-lines. The whorls are convex and the last is often very obtusely angular at the periphery. The aperture is strongly oblique and the lip thickened within by a strong rib near the margin.
Such flowers are not cyclic. However in the common case of spirally arranged sepals on an otherwise cyclic flower, the term hemicyclic may be used. The suffix -cyclic is used to denote the number of whorls contained within a flower. The most common case is the pentacyclic flower, which contains five whorls: a calyx, a corolla, two whorls of stamens, and a single whorl of carpels.
The 2½ rufous, apical whorls are turbinately depressed, and they are smooth. The first two spire whorls are smooth, the third showing faint spiral lines which increase in strength with the revolution of the spire. The anterior whorls show eight to ten equal and equidistant, rounded, and rather depressed cinguli, which are a little wider than the furrows. The body whorl is equally and regularly cingulated.
Diademoceras is a genus of nautiloid cephalopods from the middle Ordovician of North America, named by Rousseau Flower in 1945. The genus is a tainoceratacean included in the nautilid family Rutoceratidae. The shell of Diademoceras is gyroconic, of no more than two whorls, coiled such that whorls do not touch. Whorls are broad, section depressed, sides converge ventrally meeting at a well developed keel.
The length of the shell measures 11.5 mm. (Original description) The whitish shell is short, stout, with rather coarse sculpture and very short spire. It contains about five whorls, the body whorl much the largest . The whorls are inflated.
The spire is short, conoidal to conical. The apex is rounded or acute. The protoconch consists of two spirally striate and lightly pearly whorls, sometimes reddish. The 4 to 5 whorls are slightly convex and rapidly increase in size.
This species has a broad twisted apex of two whorls. It resembles Raphitoma echinata (Brocchi, 1814) (synonym of Raphitoma reticulata Renier, 1804) in size, sculpture, and outlines, but R. echinata has a slender and acute apex of four whorls.
The ovate shell has an acuminate apex. The color of the shell is red with white ribs in the middle. The fine apical whorls are small and produced suddenly into a cone. The shell contains 9 slightly convex whorls.
The height of the shell attains 1 mm and its diameter 2 mm. It is a very minute, deeply umbilicate, white shell with a depressed discoidal shape. The shell contains four whorls. The two apical whorls are very small.
The shell contains 7-8 whorls 7-8. The whorls of the protoconch are smooth, white, and globose. The third whorl is elegantly but microscopically decussate. The remainder are angled a little below the sutures, delicately semitransparent, regularly cancellate.
The minute apical whorl is smooth. The following whorls, to the number of three or less, are granulate. Then there are several spirally grooved whorls, the lower ones either smooth or grooved. The distinct supra-sutural fasciole is articulated.
The white, slender shell has a fusiform shape, and an acuminate, turreted spire. It contains 10 whorls. The protoconch is subglobose and smooth. The subsequent whorls are angulated in the middle, concave in the upper portion and contracted below.
When the shell is intact, the apex is pure white, somewhat translucent, and tightly coiled into a "Turritella" shape. However, the subsequent whorls are brown, and they are loosely and irregular coiled, such that the whorls do not touch.
The wax-yellow shell has an elongate, conic shape. It measures 9 mm. (The nuclear whorls are decollated). The 4½ post-nuclear whorls are moderately well rounded, slightly constricted at the sutures and feebly roundly shouldered at the summit.
The summits of the whorls are appressed. The whorls are marked by almost vertical lines of growth and numerous closely spaced, wavy, microscopic, spiral striations. The suture is well marked. The periphery of the body whorl is well rounded.
The small, thick, white shell has a discoid shape and is deeply umbilicate. It contains 3½ convex whorls with concentric, grooved furrows. The last whorls has a rounded shape at the periphery. The umbilicus is of a moderate size.
The height of the shell attains 2 mm, its diameter 3 mm. The small, white shell has a depressed discoidal shape and shows a deep umbilicus. It contains 4 whorls, including the two apical whorls. The aperture is round.
The length of the shell attains 7 mm, its diameter 2.5 mm. The small, fusiform shell is twisted. It is straw-coloured with faint rufous longitudinal tints. It contains seven whorls, of which three decussate whorls in the protoconch.
The next three whorls possess coarse varicose longitudinal ribs. The remaining whorls are all plane and clouded with flame-like chestnut markings. The white aperture is oblong. The sinus of the holotype (probably not full grown) is not discernible.
Whorls simple, aperture elongate, columella simple and thickened, subsutural band present, often ornamented.
The shell grows to a length of 8 mm. Its whorls are sinistral.
The pale lavender to purple flowers are , growing in whorls, blooming July–October.
The length of the shell varies between 7 mm and 13 mm. (Original description) The oval shell has a rather acute spire. The protoconch is glassy, dark brown and is inflated. It consists of 1½ whorls, followed by five normal whorls.
The length of the shell attains 11 mm, its diameter 3.5 mm. (Original description) The slender, thin shell is white, smooth but not polished. It contains eight whorls. The protoconch is small, the three apical whorls inflated, white, perfectly smooth.
The shell attains a length of 10.5 mm, and its diameter is 4 mm. (Original description) The small, solid shell is whitish in color. Its shape is acute and fusiform. It contains 1½ whorls in the protoconch and six subsequent whorls.
The length of the shell attains 12 mm, its diameter 3 mm. (Original description) The small, white shell is, slender. It has a smooth swollen protoconch of 1½ whorls and five subsequent whorls. The suture is constricted, distinct, not appressed.
The length of the shell attains 9 mm, its diameter 4 mm. (Original description) The small, thin shell is snow white. It contains a swollen smooth protoconch of two whorls and six subsequent whorls. The suture is distinct, not appressed.
The length of the shell attains 10.25 mm, its diameter 4 mm. (Original description) The small shell has an acute- fusiform shape. It contains about eight whorls. The initial whorl is extremely minute, the subsequent whorls slowly enlarge and minutely reticulate.
The shell contains 7–8 whorls (the apex is broken). The upper whorls are short, convex and with discrete sutures. The shell shows strong longitudinal ribs and two transverse, granose striae below the sutures. The aperture is oblong and narrow.
The length of the shell attains 6 mm, its diameter 2 mm. (Original description) The small shell is purple brown, banded with white, or is varicolored. The protoconch consists of 1½ loosely coiled, smooth whorls. The teleoconch contains four subsequent whorls.
The length of the shell attains 21 mm, its diameter 7 mm. The elongate shell has a pyramidal shape. It contains 12 whorls. The upper part of the whorls is carinate close to the suture and below concave and faintly striate.
The length of the shell varies between 13 mm and 30 mm. (Original description) The slender, fusiform shell is light brown, with whitish nodules. it contains 11 whorls, slowly increasing. The two apical whorls are smooth, forming a large rounded protoconch.
The length of the shell attains 40 mm. The elongate, ovate-fusiform shell is turreted. The dark white shell has a red band around the suture. It contains 12 whorls of which three, smooth and convex whorls in the protoconch.
The length of the shell attains 10 mm, its diameter 3 mm. A graceful, attenuate, fusiform species. The shell contains 11 - 12 whorls, of which 3 - 4 ocher whorls in the protoconch. The protoconch is ochraceous, and beautifully microscopically decussate.
The shell grows to a length of 7.5 mm, its diameter 3.5 mm. (Original description) The small, slender shell is whitish. The smooth protoconch contains 1½ whorls followed by 4½ subsequent whorls. The suture is distinct, not constricted or appressed.
The shell grows to a length of 9 mm, its diameter 3 mm. (Original description) The small, white shell is somewhat variable. The first six whorls are rather slender, giving a subcylindrical appearance. The latter whorls, if any, enlarge more rapidly.
The length of the shell varies between 15 mm and 25 mm. (Original description) The fusiform shell is pale brown with whitish ribs. It contains 9 whorls. The two whorls in the protoconch are smooth, convex, and form a maminillar apex.
The last and penultimate whorls have four spiral riblets above the periphery, the uppermost stronger and forming the angle of a subsutural shelf. The upper whorls are smooth. The aperture is round. The simple outer lip is dentate by the spirals.
The principal spirals of the upper surface are more or less distinctly beaded. The whorls of the spire show only two spiral carinae. The short spire is acute and contains 4½ whorls. The last are rapidly enlarging, descending toward the aperture.
The white shell has a tapering, elongate-conic shape. Its length measures 8.2 mm. The whorls of the protoconch are decollated. The 13 whorls of the teleoconch are flattened, slightly shouldered, and ornamented by strong, rather narrow, oblique, axial ribs.
The length of the shell attains 8 mm, its diameter 2.5 mm. (Original description by Bartsch) The shell is elongate-conic, white or cream- yellow. The protoconch contains 2½ whorls, well rounded and smooth. The 5 teleoconch whorls are strongly rounded.
The length of the shell attains 4.5 mm. (Original description) The oval shell has a white color, stained with purplish brown. The whorls are longitudinally ribbed with somewhat oblique ribs and striated transversely. The whorls are angulated at the sutures.
Cosmonautilus is a genus of cephalopods included in the nautilid family Clydonautilidae. Its shell is involute, with only the outer whorl exposed. Early whorls are with nodes on ventral shoulder, which disappear on the later growth staged. Later whorls are smooth.
The height of the shell attains 5.25 mm, its diameter 7 mm. The shell has a trochiform shape with six tabulate whorls. The nucleus is very minute, glassy, slightly tilted. The subsequent whorls are flat above, with closely appressed suture.
The length of the shell attains 4 mm, its diameter 2 mm. (Original description) This is a curious, thickened, very minute, somewhat corrugate shell, of a pale pink colour. The shell contains 5 whorls. The two apical whorls are rather flat.
The length of the shell attains 3 mm, its diameter 1 mm. (Original description) The shell has a wax yellow color. The 1½ whorls of the protoconch are well rounded and apparently smooth. The subsequent whorls are strongly, tabulatedly shouldered.
The surface is shining, sculptured above with close rib-striae, becoming more delicate below. The shell has 5½ whorls. The earliest whorl is smooth, shining, forming a subacute apex. Following whorls are slightly convex, slowly increasing, separated by an impressed suture.
The apical whorls of the protoconch are lacking through decollation. The opening is then sealed with a calcareous plug. The sculpture of the ovate fusiform shell shows scattered sigmoidal axial ribs that are crossed by spiral cords. The whorls are broad.
The apex is almost always pink. The six whorls are convex, separated by subcanaliculate sutures. The upper two whorls are smooth, the lower spirally lirate and radiately more or less squamose striate. The lirae are sometimes subequal and nearly smooth.
The yellowish-brown shell reaches a length of 49 mm. The heavy and squamous spire is biconical in shape. The protoconch contains 1.5 whorls. The teleoconch contains 6.5 broad and convex whorls that are weakly shouldered and contain adpressed sutures.
The height of the shell attains 20 mm, its diameter 25 mm. The imperforate shell is depressed and has an orbiculate-conoidal shape. The six whorls are separated by impressed sutures. The whorls are slightly convex, greenish-black and shining.
The milk-white shell is large and robust. Its length (protoconch missing) measures 8.8 mm. The whorls of the protoconch are decollated in the type specimen. The twelve whorls of the teleoconch are well rounded and slightly shouldered at the summit.
No pellucid markings. Stem upright, about twice as long as the leaves, cylindrical, between the whorls triangular, pubescent under whorls as well as petioles.Rataj, Karel. 1988. The beautiful Echinodorus macrophyllus. TFH 7/88.Killeen, T. J. & T. S. Schulenberg. 1998.
The milk-white shell is very slender and acute, milk-white. Its length measures 3 mm. The whorls of the protoconch are prolonged, but partly lost. The eight whorls of the teleoconch are well rounded at first, and later flattened.
The shell has an elongate-conic shape. Its length measures 3.3 mm. Its color is milk-white, with a narrow, faint yellow band in the middle of the whorls between the sutures. There are ar least two whorls in the protoconch.
The length of the shell attains 5.3 mm, its diameter 2 mm. The pinkish shell has a subovate shape. It contains 5 whorls. This shell is very remarkable on account of the large size of its two, convex, papillose protoconch whorls.
The shell has an elongate-ovate shape. Its length measures 1.8 mm. The whorls of the protoconch are tumid, obliquely immersed. The four whorls of the teleoconch are flattened, strongly tabulated, shouldered at the summit, and strongly contracted at the periphery.
The length of the shell attains 8 mm, its diameter 4 mm. (Original description) The fusiform, somewhat solid shell becomes attenuate towards the apex. It contains seven whorls. The whorls of the protoconch are imperfect in all the examples examined.
The pupiform shell is translucent. Its length measures 1 mm. The whorls of the protoconch are small, obliquely immersed in the first post-nuclear turns, marked by four spiral cords. The summits of the five whorls of the teleoconch are appressed.
The broadly conic shell is light green. Its length is 4.4 mm. The nuclear whorls are small and deeply obliquely immersed in the first of the succeeding turns. The six post-nuclear whorls somewhat inflatedly rounded, with well-rounded summits.
The creamy-white shell is very broadly elongate-conic. It measures 3.3 mm. The nuclear whorls are obliquely immersed in the first of the succeeding turns. The five post-nuclear whorls are moderately well rounded, slightly shouldered at the summit.
The milk-white, shining shell is small and measures 3.1 mm. It is heavy, elongate-ovate. Its whorls increase regularly in size. The whorls of the protoconch are small, almost completely obliquely immersed in the first of the succeeding volutions.
The bluish-white shell has a conic shape with straight sides. Its length measures 4 mm. The whorls of the protoconch have a depressed helicoid shape. There are six to seven whorls in the teleoconch showing an almost smooth sculpture.
The elongate-ovate, yellowish-white shell is imperforate. Its length measures 9.5 mm. The whorls of the protoconch are decollated. The six whorls of the teleoconch are strongly rounded, moderately contracted at the sutures and narrowly flatly shouldered at the summit.
The size of an adult shell attains 30 mm, its diameter 8 mm. The attenuated, grayish- white shell has a fusiform shape. It contains 11 whorls, of which two in the protoconch. These two apical whorls are vitreous and dark.
The height of the shell attains 2.25 mm. This is a small, solid, white shell with a deep umbilicus, elegantly sculptured. It contains 4 whorls, with two apical sleek, white whorls. The two others are aequicostate with smooth, thickened, subflexuous ribs.
The shell reaches in length. The protoconch consists of two smooth whorls. The eight subsequent whorls contain thirteen axial ribs, crossed by (ten on the penultimate whorl) fine and unequal spiral cords forming brown nodules. The shell is cream-colored.
The succeeding whorls to it are three nuclear whorls, whitish brown, smooth, but not shining like the nucleus. subinflated, and with a sharp, strong, peripheral keel. The succeeding whorls are marked by a strongly defined broad band extending from the suture more than half-way over the whorl, descending steeply to the periphery, where the keel of the nuclear whorls is continued as two sharp raised threads which pass over strong oblique angular transverse projections, are clearly defined in the smaller whorls, but on the later ones become obsolete. On the body whorl (about six on the middle and nine on the anterior third) in advance of the peripheral nodules are about fifteen sharply raised threads, with interspaces up to 0.5 mm in width.
Several studies have reported a statistical relationship between the location, number, or type of whorls and behaviour or temperament in horses. One study of 219 working horses found a relation between the direction of facial hair whorls and motor laterality; right-lateralised horses had significantly more clockwise facial hair whorls and left-lateralised horses had significantly more counter-clockwise facial hair whorls. Konik horses with a single whorl located above their eyes were rated as more difficult to handle whereas horses that also had a single whorl but located below or right in between their eyes were easier to handle. Whorls that were found to be elongated or doubled acted the most cautious when coming up to an unfamiliar object.
The protoconch consists of two whorls, large, glassy, and bulbous, smooth save for indistinct traces of microscopic spirals. The remaining whorls are strongly, angulated and carinated at the periphery. This carina appears on the later whorls as if duplex ; below this carina is a second, smaller one, and two more are obscurely indicated below. The aperture is strongly angled, and the siphonal canal is spout-like and slightly twisted.
The apex consists of 3½ cylindrically globose rounded whorls separated by a linearly impressed suture. They rise to a flattened top, consisting of fully 1½ whorls, in the midst of which lies the very minute and immersed tip. These whorls are coloured of a deep, rich, translucent, faintly ruddy brown.;The earliest ones, perhaps from rubbing, are glossy, but further on they are crossed by crowded, curved, sharpish, almost microscopic riblets.
The obtuse spire is of mediocre length. It is composed of 8 to 9 whorls growing slowly in diameter and in height. They show a slightly concave-oblique profile on almost half of the height (more than half in the upper whorls, and less than half on the penultimate whorl). Then they become almost upright or slightly convex, with a keel sensitive to the change of direction of the whorls.
The length of the shell attains 5.2 mm, its diameter 2.3 mm. The solid, elongate shell has a uniform dull color and consists of 7 convex whorls, separated by an impressed suture. The two whorls of the protoconch are smooth. The subsequent whorls show axial ribs (10 on the body whorl) and spirally decurrent cords (3 on the penultimate, 6 on the body whorl), forming a remarkable network with quadrangular meshes.
The 2½ whorls of the protoconch are smooth, rather large, helicoid, and moderately elevated. Their axis is at a right angle to the axis of the later whorls and about one-fourth immersed in the first of them. The periphery of the protoconch extends slightly beyond the outline of the spire on the left side. The eight whorls of the teleoconch are flattened and quite high between the sutures.
The length of the shell attains 8¼ mm, its diameter 3 mm. (Original description) The white shell is elongately-fusiform, thin and transparent. It contains about 9 whorls, of which about 3 form a reddish-brown protoconch, composed of convex whorls, with riblets in different directions, but the protoconch being rather worn, the sculpture is not prominent. The subsequent whorls are convex, with a narrow, excavated part below the deep suture.
The length of the shell varies between 5 mm and 25 mm. (Original description) The shell has an acuminately ovate shape. Its color is light brown, with a narrow white zone a little below the middle of the whorls, and a second, less distinct and subinterrupted one a little below the middle of the body whorl. The shell contains 9 whorls, of which 2 convex, white, smooth whorls in the protoconch.
The high spire is narrow and conical. Its profile-lines are but little interrupted by the broad, shallow, sutural depression which extends from keel to keel of the successive whorls. The protoconch consists of nearly 2 embryonic whorls, which are cylindrical, quite smooth, and end in a perfectly rounded tip, which is slightly immersed, and scarcely, if at all, oblique. The 7 whorls are short and of slow increase.
The slender shell is elongate-conic, semitranslucent and shining. It measures 3.6 mm. The nuclear whorls are moderately large, almost completely obliquely immersed in the first of the succeeding whorls; the peripheral edge only of the last volution is visible above this. The six post-nuclear whorls are situated rather high between the sutures, slightly rounded (almost flattened), faintly shouldered at the summit, apparently without axial or spiral sculpture.
The base has very numerous spiral striae which are crossed by numerous radial growth lines. The protoconch and primary whorls are white and the main body whorls are a pale buff to white color with an iridescent coppery metallic sheen. Occasionally the teleoconch (body whorls) are overlaid with pale orange or pink axial flammules. The selenizone has no distinct spiral sculpture however it has numerous fine curved growth striae.
The length of the shell attains 14.5 mm, its diameter 5.0 mm (Original description) The subfusiform, thin shell has an acute spire and a long, straight, anterior siphonal canal. The protoconch is small, globular of about 2, smooth, convex whorls. The remaining whorls number about 7. The whorls of the spire are strongly angled in the middle, leaving a wide, concave or sloping zone about the upper suture.
The milk-white shell has a broadly elongate-conic shape, very regularly tapering and is subturrited. The type specimen measures 5 mm. The 2½ whorls of the protoconch are small, helicoid, well rounded, moderately elevated, about one-third immersed in the first of the later whorls, having their axis almost at a right angle to them. The seven whorls of the teleoconch are rather high between the sutures.
Spiral tower shell of Epitonium scalare. The shell begins with the larval shell, the (usually) minute embryonic whorls known as the protoconch, which is often quite distinct from the rest of the shell and has no growth lines. From the protoconch, which forms the apex of the spire, the coils or whorls of the shell gradually increase in size. Normally the whorls are circular or elliptical in section.
The spire contains about 6 whorls, of which about one forms the blunt, smooth nucleus. The next whorls, including the penultimate, have only one strong median keel. The space above and below this keel is slightly concave, with a few microscopic spiral threadlike striae. Two whorls next to the nucleus are crossed by conspicuous radiating riblets, straight but in an oblique direction above the keel, convex below it.
Pleuroacanthites is one of two genera included in the Early Jurassic Pleuroacanthitidae and sole representative of the subfamily Pleuroacanthitinae. The shell of Pleuroacanthites is very evolute, with numerous whorls subcircular in section becoming incipiently keeled in the adult. Early whorls have parabolic nodes, later whorls are covered with oblique line which form a long ventral sinus. Sutures have lytoceratid (moss- like) lobes but more or less phylloid saddle endings.
The small shell is ovate and vitreous. Its length measures 2.2 mm. The whorls of the protoconch are deeply, very obliquely immersed in the first of the whorls of the teleoconch, above which only the tilted edge of the last volution projects, which is marked by five slender spiral threads. The four whorls of the teleoconch are well rounded, strongly contracted at the sutures and shouldered at the summits.
The shell contains seven convex whorls. The first three whorls are smooth. The remainder, with exception of the body whorl, are ornamented with about eighteen transverse ridges and two or three rather indistinct spiral grooves, the whole giving a cancellate appearance to the surface. On the body whorl the transverse and spiral sculpture are of about equal prominence, the transverse sculpture being more subdued than on the whorls above it.
The shell is solid, unicolored light ochre, biconcave, irregularly striated according to some growth lines, with numerous hair pits covering the whole surface. The spire is deeply sunken. The shell has 3¾-4½ whorls. Whorls are rounded, first whorls very narrow, the last one very large, and partly embracing the preceding one, distinctly descending in front. The umbilicus is deep, and about 1/8 of the width of the shell.
Shell description: The shell is sinistral, with a very slender spire, with nearly straight sides. The shell has 11–12¾ whorls. The uppermost whorls are moderately convex and separated by an indented suture, the lower ones increasingly more flattened and separated by an increasingly more shallow suture. The shell is yellowish brown, with a white sutural line and many prominent white papillae along the adapical border of the whorls.
The length of decollate fragment (two whorls) measures 2 mm, the diameter 1 mm.
The umbilicus is moderate, showing none of the whorls. The aperture is obliquely ovate.
Small violet flowers grow in whorls of 4–10 with conspicuous reddish-brown bracts.
Its achenes are reddish brown and its flowers grow in whorls of 12-25.
The many inflorescences have closely spaced whorls of small flowers with brightly colored calyces.
Specimens minute, high-spired, loxonematoid shells with slightly sinuate transverse costae on ephebic whorls.
The length of the shell attains 6 mm, its diameter 2 mm. The small, slender and narrow shell is elongately ovate and turreted. It is dark white to slighly straw colored. It contains 6 whorls of which two reddish whorls in the protoconch.
The length of the shell attains 7.5 mm, its diameter 3 mm. (Original description) The small, white shell has four or more whorls, exclusive of the (lost) protoconch. The suture is distinct, not appressed. The whorls slope behind and are rounded in front.
The length of the shell attains 5.5 mm, its diameter 2 mm. (Original description) The minute shell is waxen white, sometimes with faint purplish spiral bands. The protoconch contains 2½, whorls. The protoconch is turbinate, the first two whorls are smooth, polished, brown.
The length of the shell attains 5 mm. (Original description) The small shell is yellowish, with a pale siphonal canal. It has a blunt smooth protoconch of two whorls and 3½ subsequent whorls. The periphery is slightly behind the middle of the whorl.
The length of the (decollate) shell attains 8.5 mm, its diameter 4.5 mm. (Original description) The small, stout shell is subturrited. The nuclear whorls are eroded. The spire is longer than the aperture, with about six whorls in addition to the nucleus.
The shell is 1 to 1.5 mm high and measures 4 to 5.5 mm in diameter. It has approximately 4.5 whorls. The mouth is oblique to the axis of the coil. The whorls are increase relatively rapidly (in relation to other Anisus species).
The fusiform, translucent white shell is quite shiny and contains 9 - 9½ whorls. The shell is threaded with a somewhat incurved lateral contour. The aperture stands out significantly from the curvature of the body whorl. The protoconch consists of 1 - 1½ smooth whorls.
The length of the shell attains 25 mm, its diameter 7 mm. The fusiform, shining shell contains 12 whorls of which 2-3 are in the protoconch. These are smooth and convex. The subsequent whorls are concave at the top, then slightly convex.
The 2 - 3 whorls in the protoconch are finely reticulate. The other whorls are convex. The suture is not very impressed. The reticulate sculpture consists of about 12 longitudinal ribs and 3 - 4 spiral lirae that form small, glossy nodules with the ribs.
The length of the shell attains 60 mm, its diameter 27 mm. The wide, fusiform shell is white. It contains about ten whorls (the upper ones are broken off). The remaining whorls are concave on top and somewhat angulate in the middle.
The length of the shell attains 16 mm, its diameter 6 mm. (Original description) The solid, subfusiform shell is greenish white. The interior of the aperture is dark green. The shell contains 7½ whorls, including a protoconch of two smooth rounded whorls.
The length of the shell attains 17 mm, its diameter 5 mm. The thin fusiform shell is gracefully attenuate. It is pale tan-coloured. It contains 9 - 10 whorls, of which the two whorls in the protoconch are pale, shining, and globose.
The very thin shell is elongate-ovate, subdiaphanous, milk-white, and shining. It measures 4 mm. The nuclear whorls are almost completely obliquely immersed in the first post-nuclear whorl. The eight post-nuclear whorls are rounded, rather inflated, and moderately shouldered.
The shell grows to a length of 15 mm, its diameter 5.5 mm. (Original description) The solid, biconic, acute shell is slate gray with whitish projections. The protoconch (eroded) consists of two brownish whorls, apparently smooth. It is followed by nine subsequent whorls.
It has seven whorls of which two constitute the protoconch. Sculpture :—The dominant feature is a prominent peripheral keel revolving round all the whorls. The summit of each whorl is crowned by a double thread. Along the fasciole area run four slender threads.
The yellow shell has a conic shape. Its length measures 5.6 mm. The whorls of the protoconch are decollated. The nine whorls of the teleoconch are appressed at the summit, flattened in the middle, except the last, which is inflated and strongly rounded.
The large, milk-white, shining shell has an elongate-conic shape. The length of the shell measures 8.4 mm. The whorls of the protoconch are decollated. The 12 whorls of the teleoconch are decidedly rounded, slightly shouldered and somewhat constricted at the periphery.
The colour of the shell is light-cream. The spire is turriculate-conical, with a blunt apex. The protoconch is slightly bulbose, with about two smooth whorls, nucleus globular. The shell contains 5 whorls, angled at the periphery, straight above, slightly convex below.
The background color of the first whorls is typically reddish, the later whorls usually whitish with red, brown or (more rarely) black flames. The peripheral cord is usually articulated with red and white. The apex is pink. Interior of aperture is nacreous.
The sutures are impressed. The 5 to 6 whorls are convex, decussated by spiral lirae and close, strong longitudinal striae. The lirae usually contain intermediate lirulae. The whorls are often a little flattened below the suture, with a slight angle at the shoulder.
The earlier whorls are dull reddish. The apex is white. The surface is covered with a strong cuticle, shining. Nepionic shell is distinctly marked, with 4 whorls, sculptured with strong narrow radial riblets, which on fourth whorl become obsolete toward suture below.
The length of the shell attains 9.5 mm, its diameter 2.5 mm. This is a narrow, elongated species. It contains 9 (?) whorls (the protoconch has been lost). The 6 remaining whorls are convex and a show a faint indication of spiral striation.
The height of the shell attains 5 mm, its diameter 5 mm. The umbilicated, very fragile shell has a conoidal shape. The 5½ whorls are angular and flat above. The first 3 whorls are smooth, the remainder minutely cingulate, granose, and obliquely striate.
The size of the shell varies between 7 mm and 17 mm. The shell is similar to Calliostoma conulus, but smaller, generally darker in color. The apical whorls are not (or but slightly) granulate. The form is straightly conical with about 8 whorls.
The shell grows to a length of 32 mm, its diameter 30 mm. The large, solid shell has a trochiform shape. It has a pale gray color over a brilliant nacre. It contains 8 whorls, including a small pinkish nucleus of two whorls.
The subdiaphanous to dingy white shell is small. Its length measures 5.3 mm. The 2½ helicoid whorls of the protoconch are loosely coiled, decidedly elevated, and about one-fifth immersed. Their axis is at a right angle to that of the later whorls.
The whorls of the protoconch are decollated in all the studied specimens. The seven whorls of the teleoconch are somewhat overhanging. They are decidedly contracted toward the periphery from the anterior fifth of the exposed part. They are almost flattened posterior to this.
The length of the shell attains 6.2 mm, its diameter 2.3 mm. (Redescription) The solid shell is narrowly conical. Its colour is uniform cinnamon-drab, except the first two whorls which are hyaline white. The shell contains 8 whorls , gradually increasing in size.
The length of the shell varies between 4.5 mm and 9 mm. The small, delicate, fusiform shell has a light or pinkish brown color. It contains 7 whorls, of which two bulbous whorls in the protoconch. The third whorl is slightly crenulate.
The shell has always some whorls corroded with 3-8 whorls. The width of the shell is up to 8.0–16.3 mm. The height of the shell is up to 15.8–34.6 mm. The width of the aperture is 4.0–8.5 mm.
The very elongate-conic, heavy shell is very light yellow. The shell measures 9.5 mm. The nuclear whorls are small, almost completely obliquely immersed in the first of the succeeding turns. The 6 ½ post-nuclear whorls are situated rather high between the sutures.
The length of the shell attains 25 mm, its diameter 12 mm. (Original description) The small, subfusiform shell has a rather short pointed spire and contains about 5 whorls. The large body whorl is somewhat inflated. The earlier whorls are nearly flat.
The conic shell is crystalline, and shining. It measures 3.6 mm. The whorls of the protoconch number one and one-half, and are the greater part immersed in the first of the succeeding turns. The five whorls of the teleoconch are flattened.
The small shell measures 2.5 mm. It is, ovate, very thin, semitransparent, light yellow. The nuclear whorls are deeply immersed in the first of the succeeding turns. The four post-nuclear whorls are very strongly, tabulatedly shouldered at the summit, moderately rounded.
The apex is eroded. The about 7 whorls are planulate above, the last acutely angular at the periphery. The whorls are smooth or with fine spiral striae, and ill-defined longitudinal folds. The base of the shell is smooth and obsoletely plano-concave.
The length of the shell attains 30 mm, its diameter 9 mm. (Original description) The shell is of medium size and inflation. The whorls are sharply rounded in profile. The protoconch is somewhat eroded, but apparently consisting of three whorls, conical, and smooth.
The ovoid shell is heavy and yellowish white. It measures 5.3 mm. The small whorls of the protoconch are almost completely immersed in the first of the succeeding volutions. The five whorls of the teleoconch are inflated and increase rapidly in size.
The elongated, turreted shell has a uniform white color. The spire is composed of eight whorls, separated by a closely channeled suture. The protoconch is embryonic, smooth and convex. The two following whorls are also convex, but decorated with striae slightly decurrent.
The white shell attains a length of 10 mm. The protoconch consists of 2.1 whorls.
There are about forty stamens in several whorls and are long. Flowering occurs in September.
The cones are single, paired, or in whorls of three, and 5–11 cm long.
The flower stalks reach 2–3 feet long, with many whorls of widely spaced flowers.
Minor monosymmetry is also present in flowers in which the floral whorls are not isomerous.
Papers and Proceedings of the Royal Society of Tasmania 1882: 167–170 (described as Drillia woodsi) The thick and strong shell is elongately turreted, with a spire about 2½ times the length of the aperture, and consisting of a smooth convex translucent protoconch of about 1½ whorls, succeeded by about seven, gradually increasing nodose whorls. The apex is obtuse. The whorls are very slightly convex, with a well-marked suture, and a broad flat or very slightly convex area below the suture occupying a little less than half the breadth of the whorls. Below the sutural band, the whorls are more markedly convex owing to the presence of smooth oblique nodosities, which number from about ten to thirteen or fourteen to the whorl, usually with thirteen on the penultimate whorl.
The following whorls are longitudinally obliquely costate. The ribs are most prominent at the middle of the whorls, where they are crossed by two spiral lines, which form transversely elongate nodules upon them. A wavy carina passes along the upper margin of the whorls, and a finer thread borders the lower suture. On the body whorl the ribs are produced downwards below the middle, but do not extend quite to the end of the rostrum.
The subsequent whorls are convex, separated by a deep, linear suture, the upper ones are strongly angular at the shoulder, the angle however is fainter on lower whorls and nearly disappears on the body whorl. A second prominent liration is visible on upper whorls, but becomes likewise fainter. Moreover the shell is crossed by numerous, fine, raised, spiral striae and finer axial ones, producing a fine cancellation. On the siphonal canal the spirals are stronger.
The length of the shell attains 10½ mm, its diameter 4¼ mm. (Original description) The white, fusiform shell is gradate and moderately strong. It contains 8 whorls (the uppermost broken), of which 2 form a reddish-brown protoconch, with convex whorls (their number probably will have been 4 of which 2 are wanting). The whorls are sculptured by curved riblets, crossed by oblique finer ones in the lower part, which is consequendy finely reticulated.
The length of the shell attains 2.8 mm, its diameter 1.45 mm. (Original description) The small, white, thin shell consists of 5 whorls, including the prominent conical protoconch of 2 convex elate whorls, with exserted apex. The whorls of the spire have a corded obtuse angulation, with a slope from the upper suture, somewhat constricted towards the lower. The body whorl shows a second angulation starting from the suture at the aperture.
The length of the shell attains 4.6 mm, its diameter 2.4 mm. (Original description) The shell consists of 6 whorls, including the protoconch of 2 whorls, with an exsert apex, closely spirally lirate. When viewed from the apex, the contour of the spire whorls is not uniformly curved, but polygonal, septangulate in the type. They have a central angulation, provided with a stout, rounded cord, and are constricted at the linear sutures.
The shell size varies between 15 mm and 22 mm (Original description) The shell is thin, fragile, translucent, pale flesh-colored, moderately stout, with an acute, somewhat turreted spine. It contains 9 whorls. The 2½ whorls of the protoconch are nearly smooth, regular, convex and chestnut-colored. The subsequent whorls are shouldered, strongly convex in the middle, but with a smooth concave band below the suture, corresponding to the posterior notch in the outer lip.
The shell grows to a length of 17 mm, its diameter 6.9 mm. (Original description) The elongate-conic shell is wax-yellow with a broad pale-brown band at the periphery. The protoconch contains 2.5 smooth whorls 2.5, forming a pointed apex. The beginning of the postnuclear whorls has the axial riblets characteristic of the later postnuclear whorls, but here they are a little more slender and a little more closely approximated.
A part of the first turn of the protoconch whorl is lost. The remaining protoconch turn appears to be smooth. The early postnuclear whorls are marked by protractively slanting, axial ribs, of which 9 occur upon the first three whorls and 10 upon the fourth. On the first three whorls these axial ribs are quite regular, being strongest on the middle of the whorl and tapering toward the summit and the periphery.
The shell (not adult) consists of about 5 slightly convex whorls, with a conspicuous suture. The sculpture consists of 2 spiral rows of short, thick tubercles, 15 or 16 in number on the body whorl, resembling small spines. One row borders a depression at the upper part of the whorls, the other near the base The tubercles are connected by traces of spiral lirae. On the upper whorls the tubercles are connected by concentric ribs.
The length of the shell varies between 10 mm and 25 mm. (Original description) The pure white shell of the holotype contains 8 whorls with a glossy rounded vitreous protoconch of two whorls. The spiral sculpture resembles much as in Compsodrillia eucosmia, a line marginating the suture. There are two or three strong primaries on the upper whorls, five or six on the body whorl, and eight or ten smaller ones on the siphonal canal.
The shell can grow to a length of , and the live snail can weigh about .Tibia insulaechorab Gastropoda Stromboidea The shell is elongated ovate, with a short body whorl and a narrowly conical spire with ten or more whorls. The smaller whorls are finely sculptured with transverse ridges; the larger whorls are nearly smooth. The large ovate aperture is whitish, contracted at the top by a transverse fold of the left lip.
The flowers are unisexual. Male flowers: perianth segments 6 in 2 whorls, outer ones broader, inner ones slightly narrow and pubescent outside; fertile stamens 12; filaments pubescent, of 3rd whorls each with 2 large glands at base, of 4th whorls with smaller glands; rudimentary pistil pubescent or glabrous. Female flowers: ovary pubescent or glabrous. Fruit ellipsoid, 10–12 × 7–9 mm, seated on discoid perianth tube; fruiting pedicel of 5 mm, stout.
Peltoceras is an extinct ammonite genus from the aspidoceratid subfamily Peltoceratinae that lived during the later part of the Middle Jurassic (U Callovian). The shell of Peltoceras is evolute with whorls hardly embracing, so that all whorls are mostly exposed. The outer rim, which is known as the venter, aligning with the lower part or belly of the animal, is nearly flat. Inner whorls have strong ribs that bifurcate and trifurcate on the ventral margin.
The ground color is nearly white, radially maculated with brown on the upper surface and smaller spots interposed between the others at the peripheral region. The base has paler small spots on the ribs, sometimes partially arranged in radial stripes. The 5½ or 6 whorls are convex and parted by a narrow, deep suture. The apical 1½ whorls are uniform, the next whorls irregularly dotted with pink on a pale buff-brown ground.
The dextral or sinistral shell is imperforate and pyramidal-conic; solid and glossy with an obtuse apex. The shell has 6.5 whorls. Shell color varies, but is typically green and light greenish-yellow in oblique streaks on the last two whorls, with a faint green peripheral band and a dark chestnut band bordering the suture below. The preceding whorl is yellow with a chestnut band and the three embryonic whorls are pinkish gray.
The shell is very small, measuring 2 mm. It is semitranslucent, bluish-white. The nuclear whorls are quite large, forming a moderately elevated, helicoid spire, whose axis is at right angles to that of the succeeding turns, in the first of which it is about one-fourth immersed. The five post-nuclear whorls are decidedly rounded, with the greatest convexity falling on the anterior third of the whorls, between the sutures, appressed at the summit.
Sculpture : there are in the middle of the whorls small rounded tubercles, of which there are about 11 on the first ordinary and 16 on the body whorl. On the earlier whorls they are feebly prolonged downwards as riblets, but become weaker on the last whorls. The whole surface is closely scratched with hair- like and somewhat irregular lines of growth. Spirals—an exceedingly slight pad forms a faint inferior margination to the suture.
Sculpture : there are on the earlier whorls about 12, on the last two whorls about 14 elongated tubercles, which project bluntly and slightly above the middle of the whorls, and are obliquely and feebly produced to the inferior suture. They are obsolete on the base. The surface is closely scratched with fine, somewhat unequal lines of growth. Spirals—there is a very slight pad which forms an inferior margin to the suture.
The size of an adult shell varies between 70 mm and 95 mm. The elongate-fusiform shell is yellowish white, encircled by raised, corded orange-brown ribs, with several intermediate striae. The blunt protoconch contains 1½ -2 whorls. The teleoconch contains 9½ -10 whorls.
The length of the shell attains 13 mm, its diameter 4.5 mm. The buff-colored shell is turriculated, with an elevated spire with 10 whorls. The oblique, acute, longitudinal ribs and the incrassate, subventricose, upper whorls seem characteristic. The body whorl contains about 12 ribs.
The length of the shell attains 10.5 mm. This marine species has a very minute brown tilted protoconch, followed by three trochoid larval whorls. The brilliant yellow spire is markedly shorter than the body whorl, with inflated whorls. The shell contains twelve transverse riblets.
The length of the shell attains 6.5 mm. The shell is narrowly shouldered and contains 6½ whorls. It shows small, close, numerous longitudinal ribs and impressed revolving striae. Its color is whitish, with three narrow brown bands, one of which appears on the spire whorls.
The length of the shell attains 6.5 mm, its diameter 2.5 mm. (Original description) The small, elevated shell is translucent white, elevated. The protoconch contains two or more smooth whorls (defective in the specimen). The five subsequent whorls are reticulated, moderately rounded, slightly shouldered.
The length of the shell attains 30 mm, its diameter 9 mm. (Original description) The slender long, and solid shell has a lanceolate shape. Its colour is uniform livid-brown to russet- vinaceous. The shell contains 11 whorls, including a mucronate protoconch of two whorls.
The length of the shell attains 13 mm. The shape of the shell is pyramidal. The whorls are encircled with a single keel above and below, longitudinally closely ridged in the middle. The keels are whitish, middle of the whorls bluish brown, ridges whitish.
Height of five whorls, 12 mm; of body whorl, 7 mm; diameter of decollation, 1.7 mm.; of body whorl, 4.5 mm. (Original description) The shell contains more than six hardly rounded whorls (decollate). These are white, with a dark olive periostracum, the base white.
The length of the claviform shell attains 12 mm. The smooth protoconch consists of 1½-2 whorls. The teleoconch contains 5 whorls, convex from suture to suture (no concave sulcus). The suture is not distinctly crenulated, as in the other species in this genus.
On the penultimate whorl there are about fifteen cinguli, and on the upper whorls five or six. The large, acute, brown protoconch consists of about 4½ whorls, which increase regularly. The apical whorl is small, rounded and prominent. The others are distinctly carinated and shouldered.
The shell contains 3½ whorls, including a 1½ whorled protoconch. which is spirally lirate. The subsequent two whorls are rounded, crossed by strong axial ribs, about nine on the body whorl. They follow each other at the suture, and fade away on the base.
They form a high bunchy shoulder to the whorls. On the upper whorls they extend to the lower suture. The whole surface is scored with fine hairlike lines of growth. Spirals: there are feeble rounded distant threads which do not extend to the sinus-area.
The length of the shell attains 9.4 mm, its diameter 4.2 mm. (Original description in French) The slender, fragile shell has a fusiform shape. The spire consists of seven convex whorls separated by a rather well- marked suture. The protoconch consists of 5 whorls.
The shell contains probably 10 whorls with seven whorls remaining. These are convex, slowly and regularly increasing. They contain oblique and flexuous ribs (with their upper part and lower part fading away) and strong and close spiral lirae. The body whorl is somewhat swollen.
The length of the shell attains 3 mm, its diameter 1.5 mm. (Original description) The minute, white shell has a sinusigera protoconch consisting of 2½ whorls and followed by nearly four subsequent whorl. The suture is distinct and appressed. The whorls are only moderately convex.
The shell grows to a length of 14 mm, its diameter 5 mm. (Original description) The shell is white, with a yellowish base. It is slender, acute, with a swollen smooth white protoconch of about two whorls and six subsequent whorls. The suture is appressed.
The nucleus is smooth. The upper whorls contain concentric ribs and traces of one or two spiral lirae, producing small tubercles on the ribs. The whorls are flattened near the suture. Above the upper row of tubercles, this depression is roughened by small lamellae.
The slender shell is elongate, conic, milk-white. It measures 3 mm. The three nuclear whorls are moderately large, helicoid. They have their axis at a right angle to the axis of the later whorls and are scarcely immersed in the first of them.
There is no distinct secondary striation. The transverse sculpture consists of faint incremental lines, which rise more or less into little wrinkles at the suture, and sometimes undulate the peripheral angulation on the apical whorls. The suture is distinct. The whorls are moderately full.
The apel brown shell has a robust appearance. The length of the shell measures just over 6 mm. (The whorls of the protoconch are decollated). The nine whorls of the teleoconch are flattened, slightly exerted at the summit, where they are moderately squarely shouldered.
The shell of the species in this genus is narrowly bucciniform and turriculated. The protoconch is somewhat conical, containing 2 whorls. The whorls are somewhat flattened, longitudinally ribbed with long, flexuous ribs, and have a thick epidermis. The ribs lack subsutural or peripheral processes.
The protoconch consists of 2½ smooth convex whorls. The shell contains 7 to 8 whorls, markedly convex, the base contracted. The suture is well marked. The aperture is slightly oblique, oval, angled above, produced into an oblique short and open siphonal canal, truncated below.
Shell relatively small, with a conical spire issuing from a rather broad base. The wide aperture is not disjunct, but adnate to the preceding whorl. Shell is reddish-brown and opaque. First 1.5 whorls lack ornamentation, progressing into weakly striated and ribbed subsequent ultimate whorls.
The 3½ whorls are apical flat. The whorls are very rapidly increasing in size. The spiral sculpture is formed by a strong keel of the raised edges of the canal scar. Above and below this keel the body whorl is distinctly concave and smooth.
It has 18 double-crested caudal whorls and 17 single-crested caudal whorls. The flanks have one or two longitudinal rows of six to eight very enlarged scales on each side.Brazaitis, P. (2001) A Guide to the Identification of the Living Species of Crocodilians.
The height of the shell attains 20 mm. The imperforate shell is very solid. The spire has a regularly conical shape. It is composed of seven slightly convex whorls: two smooth embryonic whorls followed by two with cords decorated with three subequal, decumbent, granular ribs.
The elevated, imperforate, solid shell has a trochiform shape. Its color pattern is white or yellowish. The shell contains seven whorls. The upper three whorls are smooth in adults by erosion of the sculpture, flattened or concave on their upper surfaces, longitudinally obliquely plicate.
The minute, depressed, porcellanous shell has a thin horny operculum. It consists of comparatively few whorls. The shell is imperforate, but with a depression bounded by a riblet in the umbilical rib outside of the columella. The few whorls have a thin fugacious epidermis.
The yellowish shell has an ovate shape. Its length measures 4.3 mm. The whorls of the protoconch are small, deeply immersed in the first of the succeeding turns. The five whorls of the teleoconch are well rounded, faintly roundly shouldered at the extreme summits.
The diameter of the shell is 15 mm. The depressed shell has a turbinate shape. The spire whorls are somewhat exserted, all showing a pair of peripheral keels, which are strongly, or subsipinosely crenulated. The whorls are encircled by a spiral series of granules above.
The size of the shell varies between 7 mm and 20 mm. The acute conical shell contains eight whorls. The first five whorls are flattened, the last three somewhat rounded. The periphery of body whorl is gently rounded to meet the rather flattened base.
The length of the shell attains 7 mm, its diameter 2.5 mm. (Original description) The fusiform, elongated, slender shell is dark chestnut-brown throughout. It contains six whorls, slightly convex, separated by narrowly impressed sutures. The earlier two whorls are smooth, the remainder strongly latticed.
The length of the shell attains 5.5 mm, its diameter 3 mm. (Original description) The minute, white shell has a blunt protoconch consisting 1½ whorls, followed by four subsequent whorls. The apex is bulbous. The suture is appressed and the fasciole is somewhat concave.
The first whorls are smooth. The following whorls are spirally, delicately sulcate, with an elevated ridge in the middle. The body whorl is bicingulate, the cinguli elevated and distant. The convex base of the shell is concentrically lirate with the lirae larger around the umbilicus.
The size of the shell varies between 8 mm and 13 mm. The perforate shell has a conical shape and contains 7 whorls. The first whorl is smooth, yellowish; the following whorls are planulate, separated by canalicidate sutures. They are maculate with chestnut and white.
The shell has an elongate-conic shape. It is white on the shoulder, the rest light brown. Its length measures 5.3 mm. (The whorls of the protoconch are decollated.) The ten whorls of the teleoconch are flattened in the middle, well contracted at the sutures.
The size of the shell varies between 10 mm and 18 mm, the diameter is up to 13 mm. The narrowly perforate shell has a conic-acute shape. The 9 to 10 whorls are planulate. The embryonic whorls are smooth, buff, the remaining whitish-buff.
The dextral shell is elongate-conic, imperforate with convex whorls and a slightly impressed line below the suture. The shell has five whorls. The color is green with light streaks intermixed. The aperture is subovate and stained with a pink color just within the margin.
The length of the shell attains 6.3 mm, its diameter 2.5 mm. (Original description) The shell is ovately fusiform. The color is light brown, whitish at the base of the body whorl and outer lip. It contains 6 whorls with 1½ whorls in the apex.
The spire is conic, turreted, of the same height as the aperture. The protoconch consists of about 2 whorls. The nucleus is smooth, convex, slightly lateral,the second whorl convex, and minutely reticulated. The 6½ subsequent whorls are distinctly shouldered, flatly rounded below the angle.
The shell is very elongate-conic, yellowish-white. It measures 5.6 mm. The small nuclear whorls are immersed in the first of the succeeding turns, above which only half of the last volution projects. The seven post-nuclear whorls are situated high between the sutures.
The white shell is small and oval. Its length measures 1 mm. The whorls of the protoconch are almost completely obliquely immersed in the first of the succeeding turns. The four whorls of the teleoconch are flattened, with subtabulated summits and a deeply sulcated periphery.
The elongate oval, light yellow, shell is umbilicated. Its length measures 4.6 mm. The whorls of the protoconch are small, deeply, very obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are well rounded, with strongly rounded summits.
The shell is elongate-ovate, very narrowly umbilicated, yellowish-white. It measures 3.2 mm. The nuclear whorls are very obliquely immersed in the first of the succeeding turns. The four post-nuclear whorls are very high between the sutures where they are very moderately rounded.
The length of the shell attains 6.5 mm. (Original description) The spire of this minute and mitriform shell is produced and acute. It contains 6½ whorls, the first 1½ whorls are embryonic and polished. The others are angled, strongly longitudinally costate and delicately spirally lined.
The white shell has a pupiform shape. The length measures 5 mm. The whorls of the protoconch are small, almost completely immersed. The six whorls of the teleoconch are well rounded, scarcely at all contracted at the periphery, strongly roundedly shouldered at the summit.
The ovate, milk-white shell lacks axial or spiral sculpture excepting microscopic growth lines. The length of the shell is 1.1 mm. The whorls are flattened. The whorls of the protoconch are large, oblique and two- thirds immersed in the first of the succeeding turns.
The rather thin, shining shell has a fulvous orange color, with a pale band at the suture. It is darker on the lower whorls, fading into white towards the apex. Its length measures 6 mm. The teleoconch contains eight whorls that are finely transversely striated.
Procymatoceras is a nautiloid cephalopod from the Middle Jurassic with a large, tightly involute, rapidly expanding shell. Early, inner, whorls are round in cross section. Later, outer, whorls, and mature living chamber are flattened on the sides and venter. Surface covered with sinuous ribs.
The shell has 3.3-3.5 whorls. The average height of the shell is 1.01-1.03 mm.
There are many stamens arranged in two or three whorls. Flowering occurs from August to October.
Whorls are very slightly convex beneath, strongly spirally ribbed and grooved. The ribs are six in number on the upper whorls and rounded; the two above are much more slender than the four beneath; the uppermost borders the suture; the next lies in the concavity at the top of the whorls; and the rest surround the slight convexity, and are three times as broad as the sulci separating them. All the whorls, with the exception of the last four, are coronated at the slight angle below the excavation with very short, hollow, oblique spinules. Some of the spiral grooves exhibit rows of fine granules.
The colour of the shell is dead porcellaneous white, with a few faint ruddy-brown blotches near the top of the whorls and toward the outer lip. The spire is high, conical and scalar. The apex is small, sharp, conical, consisting of 3-4 ruddy rounded embryonic whorls, the sculpture of which is that of the typical Defrancia group (= Pleurotomoides), i. e. the upper half of the whorls is scored longitudinally by very numerous minute, sharp, raised, curved bars, which split into two and cover the lower half of the whorls with exquisite little square-shaped reticulations formed by the crossing of the bars.
The seven whorls of the teleoconch are spirally sculptured with a moderate angulation just behind the periphery of the body whorl, which becomes sharper and peripheral on the earlier whorls. In front of this, the whorls are ornamented with numerous rounded threads, separated by much wider somewhat channelled interspaces. On the upper whorls there are 3-6 of these threads, on the body whorl they extend to the anterior end of the siphonal canal, becoming more crowded anteriorly. Behind the carina the shell is smoother, there are faint spirals, hardly raised, and sparser over the centre of the fasciole than on each side of it.
The five subsequent whorls show a rather deep suture. The whorls are rounded and uniformly sculptured. The spiral sculpture consists of two kinds. On the spire two major threads near the periphery and four on the body whorl are whiter than the rest of the surface.
There is a spiral elevated line, on the middle of the whorls, which is obsolete in the intercostal spaces and has nodtdous intersections with the ribs. The protoconch is acute. The spire shows rectilinear outlines. The shell contains 8 whorls, scarcely convex, with a lightly impressed suture.
The length of the shell attains 7.5 mm, its diameter 2.5 mm. (Original description) The buff, fusiform shell is narrowly oblong. It contains 7 whorls of which two in the protoconch. The whorls of the teleoconch are slightly convex and are covered with raised longitudinal ribs.
The length of the shell attains 26 mm, its diameter 10 mm. (Original description) The fusiform shell is gradually attenuate and incrassate. it is of a rich siennabrown in colour. it contains 12 whorls, including three whorls of the protoconch, smooth, shining brown, semidiaphanous, centrally carinate.
The size of an adult shell varies between 25 mm and 37 mm. The shiny shell has a maroon color. Sometimes its borders are whitish, as well as the first whorls are shiny and colorless. The shell contains probably 10 - 11 whorls (as no specimen is complete).
The length of the shell varies between 10 mm and 25 mm. The white, ovate-fusiform shell contains 9 whorls. The superior half of the whorls is concave, the lower half slightly convex. The deep pinkish-brown line above the suture is most apparent between the ribs.
The length of the shell attains 4 mm, its diameter 1.75 mm. (Original description) The small, greyish white shell contains 5½ whorls. These are convex, somewhat angled below the suture, which is impressed. The apex is dome-shaped, consisting of two whorls, the first being very small.
It contains 7 whorls, including the protoconch. These are convex, elegantly thickly obliquely ribbed, and thickly spirally lirate. The body whorl contains 14 rounded, subelevate ribs. The lirae are small, distant, subelevate, regular, passing over the ribs The apex of two whorls is smooth and elongate.
The length of the shell attains 5.5 mm, its diameter 2 mm. (Original description) The small, acuminate shell is excavate at the base and below the suture. Its colour is buff, sometimes suffused with chocolate. An acicular protoconch of three whorls is followed by five adult whorls.
The length of the shell attains 8.5 mm, its diameter 4.5 mm. (Original description) The shell contains nine whorls. The protoconch is minute, dark brown, polished and smooth. The second and third whorls of the protoconch are beautifully reticulated by oblique transverse lines in two directions.
The length of the shell attains 8.5 mm, its diameter 3 mm. (Original description) The white, fusiform shell is acuminate on both sides. It contains 8 whorls, of which 3 polished whorls n the protoconch. The others are obtusely angulate and crossed by many spiral lirae.
It contains about 15 diagonal riblets that are less attenuated in the last whorls. The aperture is small. The angle on top of the lip is not deeply sinuated. This species has the whorls much contracted at the lower part and prominent at the rounded angle.
The white, turriculate shell grows to a length of 11.5 mm. The paucispiral protoconch has 1¾ whorls. The teleoconch consists of 3¼ rounded whorls with spiral ridges, axially crossed by 16 to 17 distinct ribs. The ribs become confused at the bottom of the body whorl.
Protoconch of 2 smooth whorls, small and globose. Whorls 8, regularly increasing, convex, very lightly shouldered, the last somewhat inflated; base excavated. Suture not much impressed. Aperture large, oval, broadly angled above, produced below into a fairly long oblique and open canal, rounded at the base.
The length of the shell attains 13.8 mm, its diameter 5.1 mm. The uniform white shell has an oblong-fusiform shape with a narrow base. It contains 7 whorls, of which two smooth conical whorls in the protoconch. The rest are strongly convex with a shallow suture.
The height of the shell attains 3 mm, its diameter 2½ mm. The turbinate, rather solid, red shell is umbilicate. The five whorls are sloping and angular. The first two whorls are smooth and scarcely visible, the rest ornamented with oblique lamellar minute striae and tuberculate cinguli.
The slightly nacreous shell reaches a length of 15 mm. It contains 6¼ whorls having the same general form as in Gaza fischeri, but with a more prominent nucleus. This nucleus is small, bulbous, and dark brown. The first 2½ whorls are glassy, brown spotted, smooth.
The radiating sculpture consists of numerous, on the early whorls strong, slightly elevated oblique threads, extending clear across the whorls and reticulating the spirals. These radii grow fainter and finally on the body whorl nearly disappear;. On the base there are only faint flexuous incremental lines.
The spire contains 5 or more whorls. The radiating sculpture consists of occasional faint impressed incremental lines. The spiral sculpture consists of occasional microscopic striae, and a single strap-like band appressed to the suture. It bears numerous flattish squarish nodules or elevations, which coronate the whorls.
The depressed shell is small and grows to a length of 6.8 mm. It has five whorls, somewhat flattened above and below. The nucleus is small, translucent white, and with the two first whorls polished. The nucleus is smooth or marked only by faint growth lines.
The acute spire is elevated conical, with sides slightly convex. The protoconch is conic with 1½ strongly convex smooth whorls, which are mostly pearly. The six whorls of the spire are flatly convex, the last angled at the periphery. The base of the shell is slightly convex.
The colour of the shell is dull grey, whitish, or greenish. The apex is acute. The protoconch is very small, with 1½ whorls, which have a slightly rugose surface. The about 7 whorls are nearly planulate, or sometimes a little bulging at the upper and lower margins.
Shell elongately fusiform with a high gradate spire and rounded body whorl tapering gently to the anterior canal. Sutural groove narrow but forming a prominent shoulder on the adult whorls. No sutural nodules. Thin axial costae present only on the first whorl, absent from the succeeding whorls.
The bluish-white shell is large and robust and has an elongate-conic shape. Its length measures 15 mm. The whorls of the protoconch are decollated. The nine whorls of the teleoconch are slightly rounded, roundly shouldered at the summit and weakly contracted at the suture.
The shape of the shell is high conical. The first whorls are straight but later whorls are concave. Coloration of the shell is cream white or with faint brown flecks. The shell height is up to 13 mm, and the width is up to 10 mm.
The whitish shell has a conical shape with straight sides and a rather obtuse apex. The whorls of the protoconch are flat and orb-like. The teleoconch consists of five to six flat or slightly concave whorls with a somewhat angled periphery. The suture is well-marked.
The shell is small, measuring 3.1 mm. It is regularly conic, bluish-white. The nuclear whorls are deeply and obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The 5½ post-nuclear whorls are slightly rounded.
Shells are generally evolute, with all whorls exposed and touching, some are gyroconic with whorls separated by a space. Whorl sections vary from subcircular to narrowly compressed. The venter, or outer rim, is generally broadly arched but in some is keeled. Sides are either smooth or ribbed.
The ovoid shell is milk-white. It measures 1.5 mm. The nuclear whorls are deeply, obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects, which is smooth. The five post-nuclear whorls are very slightly rounded.
The length of the shell varies between 2 mm and 2.9 mm. The white shell is thin, semitransparent, very glossy and shows microscopic growth lines. There are three whorls besides the protoconch. The suture is very narrow, slightly excavated and margined by the overlapping of the whorls.
The crystalline shell has an ovate, conic, shape. Its length measures 2.5 mm. The 1½ whorls of the protoconch are obliquely immersed in the first of the succeeding turns. The four whorls of the teleoconch are strongly constricted at the sutures, and moderately shouldered at the summit.
The shell has an elongate-ovate shape. Its length measures 1.4 mm. The whorls of the protoconch are smooth, deeply immersed in the first of the succeeding turns. The four whorls of the teleoconch are flattened, strongly contracted at the sutures and well shouldered at the summit.
The light yellow shell has a broadly oval shape. Its length measures 4.7 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are inflated, weakly contracted at the sutures, appressed at the summits.
The length of the shell attains 23 mm. (Original description) The shell has an elongate-conic shape. It is pale yellow, with a faint brown band encircling the whorls a little anterior to the sinal sulcus at the summit. The protoconch contains 1.5, smooth, well rounded whorls.
For terms see gastropod shell The 3-4 x 1.5-2 mm. shell has 5-7 convex whorls which are slightly more convex than those of Hydrobia acuta neglecta. Smaller shells with 5 whorls are slightly less slender than those of Hydrobia neglecta. The suture is deep.
The length of the shell attains 6.5 mm, its diameter 3 mm. (Original description) The shortly fusiform shell is transparently white. It contains eight whorls, of which four form a yellowish- brown protoconch, with convex whorls, the uppermost broken, the other ones with curved riblets, crossed by oblique, slightly finer ones, over a large part of their breadth. The subsequent whorls are rather convex, angular, with a broad, excavated, upper part, a rather narrow, nearly straight, lower part.
The size of an adult shell varies between 6 mm and 8 mm. (Original description) The small, slender shell is thin, waxen white, with a narrow purple brown band in front of the suture in the later whorls. The columella and the siphonal canal are more or less similarly tinted. The protoconch is very small, rather blunt, with the latter part spirally threaded, of about one and a half whorls, followed by about six subsequent whorls.
The protoconch consists of two smooth, convex whorls. These are followed by slightly convex whorls showing 11-12 longitudinal ribs that continue in the body whorl almost to the base of the shell. The uppermost of the three or four chief spiral lirations is situated a little above the middle of the whorls, and it is at this point that they appear to be slightly angulated. These spiral liration number 16–18 in the body whorl.
The protoconch and its whorls are heliciform, with a sculpture of slightly raised lamellae waved backward from the middle point of the periphery both ways. Under these are also fine revolving raised lines. The shell contains 9 whorls. The remainder show a transverse sculpture of from sixteen to (on the body whorl) eighteen narrow raised riblets passing entirely over the whorls, quite faint on the band and only obsolete on the columella and the siphonal canal.
The postnuclear whorls are marked by strong axial ribs that almost form cusps at the anterior termination of the posterior sinal region. They extend only very feebly across the sinal area, which occupies the posterior two-fifths of the whorls. On the body whorl these ribs are decidedly enfeebled on the base and evanesce at the junction with the columella. Of the axial ribs, 10 occur upon the first six whorls, 12 upon the seventh and the last whorl.
The milk-white shell is very long and slender. Its length measures 10 mm. (The whorls of the protoconch are decollated.) The 17 whorls of the teleoconch are situated high between the sutures, varying in outline, the first to eleventh being flattened, almost cylindric, with very strongly shouldered summits; the rest moderately well rounded, with less strongly shouldered summits. The axial ribs are very strong on the first 11 whorls, less so and more rounded on the remaining.
The shell is composed of four whorls, marked with none to three spiral carinae. The spire is normally low and umbilicus is wide, exposing all the whorls to the apex. There is great variation in the height of the spire and with its increase there is a proportionate decrease in the width of the umbilicus. The apical two whorls are flat and planulate, smooth and shining, unmarked with carinae even when the remainder of the shell may have three.
The length of the shell varies between 12 mm and 24 mm. The shell is small, imperforate, and solid. Its color pattern is pale greenish buff or light pink, painted with very broad descending flames of an orange color on the upper portion of the whorls. The 4½ whorls are angulated on the periphery, and flattened above,The upper whorls are encircled below the angle with two ribs and the body whorl with five stout scabrously nodulous ribs.
The elongate-conic shell tapers to an extremely slender apex. The polished shell is white, with a slight suffusion of brown at the apex and near the aperture. Its length measures 17.3 mm. The two whorls of the protoconch are large, compared with the early whorls of the teleoconch, helicoid, depressed, smooth, having their axis almost at a right angle to the axis of the later whorls and extending beyond the outline of these on the left side.
The elongate-oval shell is subdiaphanous. It measures 2.1 mm. The whorls of the protoconch are small, almost completely immersed in the first post-nuclear whorl, only the rounded two-thirds of the last volution are visible, and those indicate that the axis of the nuclear turns must be at a right angle to the axis of the later whorls. The five whorls of the teleoconch are moderately well rounded, the last one somewhat inflated, shouldered.
The early whorls are well rounded, the later ones flat, and broader at the summit than at the suture. The sculpture shows about fourteen strong, almost vertical, scalariform axial ribs on the second, and sixteen quite protractive ones on the succeeding whorls. On the penultimate turn, however, they are less oblique than on those preceding it. These ribs are very strongly developed at the summit of the whorls and render the deeply channeled suture decidedly coronated.
The nucleus is smooth and shining. The suture is well marked by the strong keel, which is also visible on the upper whorls. The sculpture consists on the upper whorls of thin, strongly curved, radiating riblets, which are rather crowded, but much more distant on the lower whorls, and nearly disappear on the last two. These riblets are slightly thickened towards the upper suture and below towards the keel, which is crenulate by their crossing it.
These are crossed by rather thin, prominent ribs, strongly bent in a sigmoid curve, and having on the lower whorls rather faint spiral sculpture. The four to five whorls below the protoconch are strongly convex and a little swollen at the rounded shoulder, which is rarely somewhat angulated, and wnthout a definite subsutural band. The suture is strongly impressed, the upper part of the whorl rising rather abruptly from it. The protoconch consists of about two small, prominent whorls.
The height of the shell attains 18 mm. (Original description) The rather thick shell has a fusiform shape and is yellowish-white. The upper whorls are lost by erosion. Of the remaining 6 whorls the upper ones are still eroded, of the 4 whorls which are in sufficient state of preservation, the upper 2 are slightly angular, their upper part a little excavated, the lower part more convex, with a single row of nodules on the limit.
The postnuclear whorls are well rounded. They are marked on the first three turns by a submedian row of distantly spaced cusps. On the succeeding whorls these cusps become elongated into ribs that extend from the sinal sulcus at the summit anteriorly to the suture, becoming weaker toward the suture. Of these ribs, 10 occur upon the first whorl, 12 upon the second and third, and 14 upon the remaining whorls except the body whorl, which has 16.
Hair whorls are sometimes classified according to the direction of hair growth (e.g. clockwise or counterclockwise), shape, or other physical characteristics. Anecdotal evidence claims a statistical correlation between the location, number, or type of whorls and behaviour or temperament in horses and other species (but see Correlation does not imply causation). There is some research suggesting that the direction of hair whorls may correlate to a horse's preference for the right or left lead and other directionality.
The subsequent whorls are angular, very convex, separated by a linear, undulated suture, accompanied by a faint infrasutural rib, more conspicuous on upper whorls . The upper part of whorls is conspicuously excavated, the lower part contains strong, short, nodulous, oblique ribs, abruptly ending at the excavation, scarcely reaching the basal suture in the lower whorls. There are 3 faint, raised, spiral lirae in the excavation, crossed by elegantly curved, partly riblike striae, 4 to 5 stronger lirae crossing the ribs, with a few faint striae above them on the limit between ribs and excavation in the lower whorls. On the penultimate whorl, another liration appears at some distance above the suture, amounting to 3 rather remote, strong lirae on the body whorl, and a large number (about 20) on the basal part of the body whorl and siphonal canal.
Gasteropod shells may be sinistral or dextral, according as the whorls turn to the left or right.
George Washington Tryon, Manual of Conchology vol. VI p. 316; 1884 (described as Daphnella circinata) (Original description) The shell is slender, elongate and covered with a brownish epidermis. It contains six whorls , with a single, sharp, narrow carina, about the middle of the whorl in the upper whorls.
The colour of the shell is white under a yellow epidermis. The spire is high, narrow, conical, with profile-lines interrupted by the straight-lined contraction of the shell between the keels of the successive whorls. The apex (eroded) is small and rounded. The spire contains 6-7 whorls.
The length of the shell attains 4 mm, its diameter 1.75 mm. (Original description) The minute, white shell is particularly beautiful. It contains six whorls , compact, clathrate, with close longitudinal riblets and revolving lirae. Just underneath the sutures the ante-penultimate and penultimate whorls are sparsely spotted with fulvous.
The length of the shell varies between 9 mm and 26 mm. (Original description) The small shell is slender and acute. Its color is black or very dark reddish brown. It contains two smooth whorls in the protoconch, the second with a peripheral keel, followed by seven subsequent whorls.
The length of the shell varies between 25 mm and 50 mm. The acuminately turreted shell is yellowish white, sometimes stained with brown. The whorls are decussated with nodulous longitudinal ridges and spiral striae. The upper part of the whorls are concave, edged with a slightly nodulous keel.
The profile-lines are hardly interrupted by the sutures. The apex consists of 1¼ broad, depressed, and flatly rounded, smooth whorls. The eight whorls increase very slowly. They are short, the last very small, being scarcely at all more tumid than the rest, and having a short conical base.
The length of the shell attains 18.5 mm, its diameter 7.5 mm. (Original description) The white, fusiform shell has a moderately long siphonal canal. It is very thin, fragile and hyaline. It contains eight whorls, of which about 2½ form the protoconch, with convex whorls and criss-cross sculpture.
The length of the shell attains 6 mm, its diameter 2.3 mm. (Original description) The small shell is lanceolate, subturreted and thin. Its colour is dull white, with a few brown spots on the shoulder, and the apex brown. It contains 8 whorls, including a protoconch of 3½ whorls.
The length of the shell attains 8 mm, its diameter 3 mm. (Original description in Latin) The delicate ovate- cylindrical shell is semi-transparent and has a milky white color. It contains 7-8 whorls of which 2⅓ whorls in the protoconch. These are white and rather slowly decussate.
The shell grows to a length of 7 mm, its diameter 2.5 mm. (Original description) The very small, acute shell contains 8 whorls. It has a flesh color or is pinkish while and has a polished appearance. The protoconch is turbinate, blunt, polished, smooth and contains about two whorls.
Potoxylon melagangai is an evergreen tree with gray bark. Leaves are alternate, simple, leathery, with entire margins and pinnate venation. The inflorescences are grouped in axillary spikes. The flowers are bisexual and actinomorphic with six tepals in two whorls, 9 stamens in three whorls, the ovary superior and unilocular.
The length of the shell attains mm, its diameter mm. (Original description) The white, oblong, turreted shell contains 6 to 7 whorls, of which two in the protoconch. This is a very elegantly formed shell. The whorls are narrower at the base than above, thus producing the turreted aspect.
The elongate-ovate shell is vitreous. Its length measures approximately 3 millimetres. The whorls of the protoconch are smooth, deeply immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are well rounded.
The original genus description (Nomusa 1936), states that Siogamaia is a shell of moderate size with many whorls. The outline is elongate-conical in outline. The surface is marked by weak axial ribs that are mostly shown in the earlier whorls. The interspaces between the ribs are smooth.
The shell is of medium size and grows to a length of 2.7 mm. It is strongly sculptured, subdiaphanous to milk-white. The nuclear whorls number at least two, and are obliquely a little more than half immersed. The five post-nuclear whorls are strongly shouldered and subtabulated.
The size of the shell attains 13 mm, its width 9 mm. (Original description) The small, oval shall has a short spire consisting of 4 rapidly diminishing whorls. The outline of the whorls is slightly convex. The oval aperture measures rather less than half the length of the shell.
Shape convex to low-convex above, flattened below. Whorls rounded, with shallow to very shallow sutures. Umbilicus moderately wide, symmetrical, deep, exposing upper whorls, usually slightly overlapped by reflected peristome. Mouth broadly oval, except where interrupted by penultimate whorl; last part of body whorl expanding, descending near mouth.
The size of the shell varies between 9 mm and 23 mm. The umbilicate, moderately thick shell has a conoid shape. The five convex whorls are separated by canaliculate sutures. The first whorls are eroded, whitish, the rest roseus, cinereous or brownish, ornamented with a few radiating white streaks.
The height of the shell reaches 5 mm and its diameter 5 mm. The small, solid shell has an ovate-round shape with 5 whorls. It is narrowly umbilicate. The two apical whorls are smooth, the antepenultimate has one keel, the penultimate two and the body whorl three keels.
The very small, solid shell is perforate or has a narrow umbilicus. It contains a few convex whorls. The protoconch consists of one or two smooth whorls. The turbinate or globoso-conic shell shows numerous subequal spiral cords with in their intervals well developed or weak cross threads.
The shell has four or four and a half slightly convex whorls. The last whorl is often weakly descending near aperture. The whorls from whorl 3 onwards are more narrowly coiled than in Oxychilus cellarius, the last whorl descending lower. The umbilicus is wide (one sixth of diameter).
The white shell has an elongate-ovate shape. Its length measures 2.7 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns. The six whorls of the teleoconch are flattened, strongly contracted at the periphery, and well shouldered at the summit.
The uniformly pale brown shell is very large (compared with the other species in this genus) and has an elongate conic shape . Its length measures 13.8 mm. The whorls of the protoconch are decollated. The 13 whorls of the teleoconch are well rounded, and strongly appressed at the summit.
The reddish brown, solid shell is ovate and depressly flattened at the upper part. It contains 8, transversely sculptured, whorls. The centre of the upper whorls is tuberculated, spotted with white, the last longitudinally rather obliquely ribbed. At the angle they become more like prickly nodules, below somewhat white.
The shell is generally described as elongate, thick, solid and turreted. It comprises as many as 20 flat-sided whorls with the early whorls being sculptured with strong colabral axial ribs. Spiral incised lines appear on the ninth or tenth whorl. These gradually increase in number to three.
The sinistral shell is ovate, with slightly convex whorls and the suture distinctly margined. The shell has six whorls. The color is glossy white with the last whorl yellowish and ornamented with a median zone and base of brown. The aperture is white and the brown peristome is thick.
It is composed of five or six indistinct whorls. The suture is simple. These whorls are ornamented with longitudinal folds or ribs, narrow, and regular, finer and closer towards the lip. Upon the body whorl, which is somewhat ventricose, the ribs are slightly arcuated throughout their whole length.
Multiple perspectives on Notocochlis chemnitzii The shell is smooth. There are four to five whorls with a short spire. It is grayish-blue to grayish-yellow, with arrow-shaped bands of brown and white. Some individuals may have a white band on the upper part of their whorls.
The shell contains moderately convex whorls, including smooth whorls in the protoconch. The spîral sculpture shows prominent spiral cords and numerous interstitial spiral threads. The axial sculpture shows many weak growth lines. The body whorl contains twelve primary spiral cords and measures ⅔ of the total length of the shell.
The yellowish white shell is ovate and umbilicated. Its length measures 6.1 mm. The whorls of the protoconch are very small and deeply immersed in the first of the succeeding turns. The six whorls of the teleoconch are well rounded, with strongly concave summits, forming deeply channeled sutures.
The elongate-ovate shell is subdiaphanous. Its lengthmeasures 3 mm. The whorls of the protoconch are smooth and deeply immersed in the first of the succeeding turns, only a part of the last one appearing above it. The five whorls of the teleoconch are inflated and somewhat rounded.
The ovate, umbilicated shell is bluish white. Its length measures 5.7 mm. The whorls of the protoconch are small, obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are moderately rounded, slightly shouldered at the summits, marked by retractive lines of growth.
The white, oblong-ovate shell is somewhat ventricose. Its length measures 2.2 mm. The whorls of the protoconch are nearly half immersed in the first of the succeeding turns. The four whorls of the teleoconch are somewhat inflated, moderately contracted at the periphery and moderately shouldered at the summit.
The large, shortly ovate shell is yellowish to milk-white. Its length measures 7.7 mm. The whorls of the protoconch are deeply immersed; only half of the last turn is seen in tilted position when viewed from above. The five whorls of the teleoconch are increasing rapidly' in size.
The shell has an elongate-conic shape. It is milk-white, with a broad yellow band a little anterior to the middle of the whorls between the sutures. Its length varies between 3.6 mm and 4.3 mm. The two whorls of the protoconch form a depressed helicoid spire.
The height of the shell attains 3.8 mm, its width 2.2 mm. (Original description) The minute shell has a white or warm brown color. The turbinate nucleus has a minute smooth apex and three later axially concavely arcuate ribbed whorls. The 3½ subsequent whorls show a distinct suture.
The height of the shell attains 5 mm, its width 1.9 mm. (Original description) The shell is small, rather solid, slender and has a fusiform shape. It contains 8½ whorls of which six form the protoconch. The colour of adult whorls is straw yellow, the protoconch cinnamon brown.
The length of the shell attains 4.6 mm, its diameter 2.4 mm. (Original description) The thin, oval, white shell consists of four whorls besides a brown protoconch of 2 whorls, which are convex, apparently smooth, but under the microscope very finely spirally lirate and interstitially punctate. The spire-whorls are convex medially sharply angulate with a cord, base contracted, and forming a moderately long siphonal canal, which is slightly curved to the left. The sutures are distinct and finely canaliculate.
The apex is more or less eroded in all the four specimens :it consists of not more than 1¼ embryonic whorls, which are globose, smooth, and with the point a little obliquely pressed down. The spire consists of 8½ whorls, rather short except the last, of regular increase, angulated above the middle. The shoulder between the suture and the keel is straight-lined. From the keel the whorls are slightly contracted to the inferior suture, and the profile-line here is scarcely convex.
The apex is small, roundedly sharp, consisting of 3¼ carinated, but otherwise perfectly smooth, whorls, which form a short compact little cone, of which the extreme tip is a little obliquely flattened down on one side. The shell contains 10 whorls in all. There is a drooping and very slightly concave shoulder below the suture. The greatest breadth is at the keel, below which the whorls begin faintly, and with a very slightly convex profile, to contract into the inferior suture.
The length of the shell attains 13 mm, its diameter 5.25 mm. (Original description) The slender, acute shell is white, smooth, but not polished. It contains ten or eleven whorls when adult. The whorls of the protoconch as in Corinnaeturris leucomata (Dall, 1881) , except that the protconch itself is smaller and more acute; the notch-band narrower, occupying only about a quarter of the surface in the smaller whorls, and descending but slightly, thus giving a somewhat turreted aspect to the spire.
The length of the shell attains 10¼ mm, its diameter 4¼ mm. (Original description) The rather strong, white shell is biconical. It contains 9 whorls, of which 4 form a yellowish-brown protoconch, with moderately convex whorls, of which about 2 upper ones smooth, 2 with curved, raised striae, stronger just below the suture, crossed in their lower part by very fine, oblique striae. The subsequent whorls are angular, the upper part slightly excavated, the basal part nearly straight in outline.
The body whorl, with neither folds nor tubercles, is as large as all the others together, and striated at the base. The ground color of this shell is whitish, and there are delineated brown undulating or zigzag lines, more or less numerous, which descend from the top to the base of the whorls. Sometimes other bands upon the upper whorls form delicate rhombs. The aperture is rather narrow, attenuated at its lower extremity, and as long as the other whorls united.
The height of the shell is 7 mm, its diameter 6 mm. The shell is solid for its small size, perforate, nearly exactly conical in form, and consists of 6 whorls. The upper whorls are almost planulate, while the body whorl, which is as high as all the others together, is bluntly angulated. The upper whorls are encircled around their lower borders by a white girdle articulated with vertical black lines, and which is continued upon the periphery of the body whorl.
The size of the whitish, solid shell varies between 11 mm and 14 mm. The protoconch is paucispiral with a slightly less than one whorl and shows fine spiral striae (stretch marks). The teleoconch consists of 3.5 whorls with the second and the third whorl showing five spiral bands and the body whorl with twelve spiral bands. The whorls are axially crossed by twelve and thirteen rounded ribs on the second and third whorls and by ten ribs on the body whorl.
The shell is bone to creamy white in color with an elevated spire, a very distinct suture, and a strongly curved, long, slender siphonal canal. The shell has two nuclear whorls (which are typically eroded) and five subsequent whorls. The whorls are rounded and bear 8 to 10 narrow varices which are prominent at the shoulder, where they rise into long blunt spines that curve towards the axis of the shell. The aperture is subovate, and the operculum is thin and light brown.
The spire is regularly conical and measures about one-third the total length of the shell. It consists of five whorls, ending in a small, blunt, turbinate protoconch of two and a-half smooth rounded whorls. The whorls of the teleoconch are slightly convex. They are separated by a well-defined linear suture and ornamented by six flat spiral ribs, the three posterior ones separated by flat shallow sulci of about equal width, the three anterior ones by linear grooves sometimes almost obsolete.
The suture is deep and appressed. The whorls are gently rounded. T he apical whorls show (on the third whorl about fifteen) very narrow, sharp, threadlike, vertical ribs with much wider interspaces, and at the suture numerous, irregular, small, retractive folds extending over the fasciole, with wider interspaces, nearly twice as many as there are ribs. On the succeeding whorls these ribs and folds grow sparser and weaker, so that on the sixth whorl ribs, folds and fasciole are obsolete or absent.
This species feeds on a yellow-brown sponge. The egg mass is a messy ribbon of several whorls.
The shell is imperforate, conic and globular. Whorls are convex. The spire is short. The peristome is continuous.
In some cases, the numbers appear to be multiples of Fibonacci numbers because the spirals consist of whorls.
The spire is conic. The apex is acute. The sutures are impressed. There are about seven, convex whorls.
Specimen from original lot are a little larger than the living shell described, with the whorls slightly deeper.
Spines are arranged in whorls, mostly of four. Leaves are small and narrow-lanceolate and arranged in rosettes.
Their perigonium consists of two trimerous whorls of tepals, or conversely of a perianth comprising calyx and corolla.
It passes into the sculpture of the adult gradually, in 2½ nuclear whorls, which show first minute transverse wrinkles on the periphery of the second whorl. The succeeding whorls are transversely sculptured by eight to twelve slightly oblique angular riblets, which pass entirely over the whorls, and only become obsolete on the siphonal canal. These are crossed, first by (on the upper whorls) two or (on the body whorl) nine rounded threads which rise to sharp points on reaching the summits of the riblets, and are perfectly distinct in the interspaces. Secondly, by finer intercalary revolving threads, which pass without change over the riblets, usually to the number of three or four between each pair of primary threads.
The shell has 5½ whorls, of which 2½ smooth whorls in the protoconch. They are at the top concave and carinated, the others are rather flat. The ribs are crossed by 14 spiral lirae. The ribs and the lirae are so near together that the granules almost touch one another.
The length of the shell attains 8 mm, its diameter 3.3 mm. (Original description) The small, acute shell is pale brownish. Its smooth, acute protoconch consists of 2 whorls. The teleoconch consists of six subsequent whorls, the first of which has two peripheral spiral threads with an angle at the shoulder.
The length of the shell attains 3.5 mm, its diamerter 1.2 mm. (Original description) The minute, white shell has brown sinusigera protoconch consisting of 2½ whorls, followed by four subsequent whorls. The spire is acute, the suture appressed, somewhat constricted. The anal fasciole is rather wide, crossed by retractively concave wrinkles.
The shell is only 0.8 to 1.1 mm high and measures up to 9 mm in diameter. It has up to 7 whorls. The shell is flattened at the functional lower side, concave at the upper side. On the top, the whorls are flat, separated only by a slightly pronounced seam.
The size of an adult shell varies between 8 mm and 1 mm. The dark yellowish-brown shell is elongate but has a narrow base. It contains eight whorls; the first two are convex, the others concave on top, convex below. The whorls are thus strongly constricted below the suture.
The length of the shell attains 14 mm, its diameter 7 mm. The oblong-clavate shell is thick and solid. The conical spire is acuminate and contains eight narrow whorls. The whorls show nine, pronounced, straight longitudinal ribs positioned at equal and regular intervals, becoming slightly nodulous at the suture.
The shell contains 10 whorls, of which two constitute the protoconch. The ribs are prominently round-backed, arranged at ten to a whorl. They follow each other irregularly up the spire. On the upper whorls the spirals are evanescent, and are represented by two or three beads on the ribs.
The length of the shell attains 8 mm, its diameter 2.5 mm. This is a small highly coloured, fusiform species, with a conspicuous, spiral, swollen, nodulous angle just above the centre of the whorls. It contains eight whorls, of which two in the protoconch. The aperture has a square-ovate shape.
The shell contains six whorls, with a very minute brown protoconch of two whorls. The whole surface is delicately reticulated with subequal axial and spiral threads, the spirals cut by the axial interspaces into minute nodules, the interstices squarish. The surface resulting is grating to the touch. The aperture is narrow.
The length of the shell attains 7 mm, its diameter is 3 mm. (Original description) The short, solid shell is narrowly oval, with a blunt apex and a slightly contracted base. The protoconch consists of two smooth, slightly convex whorls. The four whorls of the spire are sloping scarcely convex.
The length of the shell varies between 5 mm and 10 mm. The elongated, fusiform shell has a pointed spire. The shell contains 7 convex whorls, of which two smooth whorls in the protoconch. They show many pronounced axial ribs and smaller decurrent, lamellar threads forming a reticulation with nodules.
The length of the shell varies between 5 mm and 15 mm. The protoconch is multispiral. (Original description) The reddish-brown shell has an oblong-fusiform shape. The six whorls show about 20 pronounced axial ribs, crossed by transverse riblets (about 5 in the upper whorls) forming a latticed structure.
The length of the shell attains 10 mm, its diameter 3 mm. (Original description) smooth, shining, white shell is shortly fusiform. It contains 6 to 7 whorls, of which about 2 form a smooth, convexly-whorled protoconch. The subsequent whorls are slightly convex, with a narrow depression below the simple suture.
The length of the shell attains 16.4 mm, its diameter 6.1 mm. The claviform shell is relatively broad with 6 strongly convex whorls in the teleoconch and a pale peripheral band. The whorls are not shouldered. The axial ribs weaken below the suture and do not undulate on the base.
The length of the shell attains 8 mm, its diameter 3 mm. (Original description) The small, pinkish white shell is polished and acute. It has a smooth protoconch of about two whorls and five subsequent hardly rounded whorls. The spiral sculpture consists of a few obscure threads on the siphonal canal.
The length of the shell attains 5 mm, its diameter 1.25 mm. (Original description) The minute shell has a very small turbinate brown protoconch of about 2½ whorls, the latter part of which is feebly reticulately sculptured. It is followed by 3½subsequent whorls;. The suture is distinct, not appressed.
The nucleus is smooth. The upper whorls have concentric ribs. On the third whorl they are pointed above, at some distance from the suture, and near the base of this whorl, appears a row of tubercles on a spiral rib. The subsequent whorls are slightly concave or canaliculated near the suture.
The aperture is fulvous inside. The spire is conic, turriculate, very little higher than the aperture. The protoconch is papillate and consists of two smooth convex whorls. The shell contains 6 whorls, the last high in proportion, with a sloping, broad, and lightly excavated shoulder, slightly convex below the inconspicuous angle.
The thin, milk-white shell is very small, measuring 2.9 mm. It is turreted, with channeled sutures and an obtuse apex. The nuclear whorls are small, strongly obliquely immersed in the first post-nuclear whorl; only a portion of the last volution is visible. The six post-nuclear whorls overhang somewhat.
The thin, bluish white shell has an ovate shape and is narrowly umbilicated. Its length measures 3 mm. The whorls of the protoconch are small, completely, deeply, obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are inflated, strongly rounded, and appressed at the summit.
The length of the shell attains 11.2 mm, its diameter 4.3 mm. The shell has an ovate fusiform shape with a narrow base. Its color is dirty white There is a faint indication of spiral banding . The shell contains 8 whorls, of which two smooth conical whorls in the protoconch.
The apical whorls is smooth, glossy, rounded and opaque white. The other whorls are rather convex. They are ornamented with spiral thread-like cords, four on the second whorl. about six or seven on the next, eight or nine on the penultimate whorl, and about forty on the body whorl.
For terms see gastropod shell. The 1-2.5 x 3.0-4.5 mm shell is nearly planispiral in its coiling. The shell has 3-4 strongly convex whorls with a deep suture, at the lower side the whorls are in one regular plain and never keeled. The upper side is concave.
There are male and bisexual flowers. Each is made up of three whorls: one whorl of red sepals and two whorls of red petals. As the flower blooms the petals spread outward and sometimes curl backward toward the stalk. At the center are 16 to 19 stamens with bright yellow tips.
The length of the shell attains 13 mm, its diameter 5 mm. (Original description) The small shell is waxen white, darker on the columella. The protoconch has 2 whorls followed by about five subsequent whorls. The protoconch is flat-topped, the first whorl with one strong keel, the second with three.
The height of the shell varies between 13 mm and 23 mm. The solid, conical shell is imperforate. It has seven, inflated globose whorls with a rounded periphery and a closed umbilicus. The whorls show a more or less obvious angle or carina in the middle of the upper surface.
The shell grows to a length of 9 mm, its diameter 4 mm. (Original description) The small, thin, acute shell is rose pink and not polished. It has a blunt protoconch of one and a half smooth inflated whorls, and five well rounded subsequent whorls. The suture is distinct and appressed.
The height of the shell attains 11.5 mm, its diameter 11 mm. The shell has a depressed-conical shape. The 5 whorls are rapidly widening, and are separated by profound sutures. The whorls are spirally distantly costulate, with three costulae on the penultimate whorl, separated, elegantly ornamented with numerous rosy tubercles.
The apex is brown. The five whorls increase rapidly in size. They are wound obliquely the last two-thirds of the total length. Sculpture : The earlier whorls are smooth, the later bear fine incised spiral grooves, of which the last has about thirty, the penultimate eighteen, and the antepenultimate twelve.
The spire is composed of seven or eight slightly angular whorls, the two or three lowest, crowned with a row of elongated, solid, pointed tubercles, pretty near to each other. The tubercles of the upper whorls are less apparent. The ovate aperture is yellowish. The base is pretty strongly emarginated.
The reddish brown shell has an irregular pupiform shape. The length of its shell measures 6.75 mm. (The whorls of the protoconch are decollated.) The ten whorls of the teleoconch are flattened,. They are marked with about eighteen poorly developed, more or less rounded, vertical axial ribs and smooth intercostal spaces.
The shell of Zyzzyxdonta alata has apical sculpture typical of the Endodontidae. The postnuclear whorls have widely spaced radial ribs which protrude into hollow, winglike structures at the carinated periphery. There are about 5 whorls that are rather loosely coiled. The apex is flat, but the spire is slightly elevated.
The length of the shell varies between 3.5 mm and 5 mm. This is a very small species, light violet with a white transverse band around the body whorl. The shell contains 7-8 whorls, with two smooth, acuminate ones in the protoconch. The whorls are rotund and longitudinally crassicostate.
The length of the shell attains 11 mm, its diameter 4 mm. (Original description) The small, slender shell is whitish, The aperture measures about one-third the whole length. The shell contains smooth protoconch of 1½ to two whorls and seven subsequent well rounded whorls. The suture is distinct, not appressed.
The broadly conic shell is milk-white and measures 3.5 mm. The whorls of the protoconch are deeply obliquely immersed, apparently smooth. The six whorls of the teleoconch are well rounded. They are marked with three strong, equal spiral keels, the posterior two of which are tuberculate, the third one smooth.
The white shell moderately large measuring 3.2 mm. It is elongate-conic, with decidedly channeled sutures. The nuclear whorls number at least 2, forming a depressed helicoid spire, which is obliquely, almost one- half immersed in the first of the succeeding turns. The six post-nuclear whorls are moderately rounded.
The small, ovatel shell measures 2.7 mm. It is bluish-white. The nuclear whorls are small, obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six post-nuclear whorls are moderately rounded and narrowly shouldered at the summit.
The shell is very elongate-ovate, deeply umbilicated, light yellow. Its length measures 5.5 mm. The whorls of the protoconch are very deeply immersed. The five whorls of the teleoconch are very slightly rounded in the middle between the sutures, more strongly so near the anterior end and toward the summit.
The very elongate-ovate shell is milk-white. Its length measures 4.4 mm. The whorls of the protoconch are small, obliquely two-thirds immersed in the first of the succeeding turns. The seven whorls of the teleoconch are well rounded, moderately contracted at the sutures and slightly shouldered at the summit.
The length of the shell attains 17 mm, its diameter 8 mm. The fusiform shell is slender and has a dark white color. The damaged holotype contains six whorls, including two smooth apical whorls. The others are impressed at the suture, swollen and contain spiral lirae (12 on the body whorl).
The white shell has a very elongate-ovate shape. Its length measures 4.1 mm. The small whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns. The six whorls of the teleoconch are moderately rounded, considerably contracted at the sutures and moderately shouldered at the summit.
The very coarse and heavy shell has an elongate-ovate shape. Its length measures 9.3 mm. The whorls of the protoconch are small, deeply, obliquely immersed in the first of the succeeding turns. The six whorls of the teleoconch are rather high between the sutures, well rounded with narrowly tabulate summits.
The elongate-conic shell is very regular in outline, yellowish white, shining. Its length measures 4 mm. The whorls of the protoconch are almost completely immersed in the first of the succeeding volution. The whorls of the teleoconch are moderately rounded, rather high between the sutures, slightly shouldered at the summits.
Shell up to 80 mm, with a moderately high spire and a strongly distorted profile. The protoconch is large (2 mm), globose, distinctly cyrtoconoid with three smooth whorls. The teleoconch consists of 7-8 whorls. The body whorlis compressed on the side of the aperture and increasingly inflated opposite to it.
The shell contains five swollen whorls. The sinus is deep. The outer lip is varicose. The aperture is oval.
The outer whorls have large simple ribs and two rows of massive lateral tubercles, the outer row developing first.
The size of the shell varies between 15 mm and 23 mm. It has 9 whorls in the teleoconch..
The teleoconch contains eight gradate whorls. The columella has an oblique fold.G.W. Tryon, Manual of Conchology vol. VIII p.
The shell is variable in size and colour. It is acute, 20-30mm tall and with 8-10 whorls.
It contains about 8 whorls, of which nearly 2 smooth ones form the protoconch, . The subsequent whorls are only very slightly convex, separated by a rather conspicuous suture, which is however not very distinct by the spiral grooves, with which the whole shell is encircled. These grooves are rather deep, the subsutural and median one of body whorl however less so. The lirae are granose on 2 or 3 postnuclear whorls, lower on they are only closely punctured, the lirae remaining smooth, but for fine growth striae.
The length of the shell attains 30 mm, its diameter 10 mm. (Original description) The shell is of moderate size, rather thick and solid, elongate-ovate or subfusiform,. It shows a rather long, regularly tapered spire, consisting of about six whorls below the protoconch, which is small and consists of two or more whorls, eroded in our specimens. The whorls of the spire are a little convex and slightly angulated or shouldered just above the middle, and have a rather broad, slightly concave subsutural band.
Spirals—the upper whorls are angulated below the sinus-area. Close to this angulation, both above and below, there are 3 or 4 unequal but rather weak threads. On the side of the whorls are three flat strongish threads, on the body whorl these all are less distinct, and the whole base and aperture are covered with flat, broad threads, and very slight, shallow, squarish furrows. Where these threads cross the longitudinals they tend, especially on the upper whorls, to rise into small tubercles.
The subsequent whorls are scarcely convex, probably about half a whorl with only a few smooth ribs must still be reckoned to the protoconch. The remaining whorls contain a rather strong, nodulous, bilirate, infrasutural rib, red-brown in the interstices of nodules. Below this is a rather narrow excavated space, with 5 spiral threads and faint, descending, red-brown llammules, corresponding to the interstices of the subsulural nodules. The lower part of the whorls show slightly oblique, rather numerous ribs, 17 in number on penultimate whorl.
On the keel they are exceptionally strong, regular, and a little remote, as they are also at the top of the whorls in the suture. The whorls are angulated about the middle, projecting in a rather narrow, prominent, rounded keel, almost crenulated by growth-lines. The whole surface is covered by small, broadish, rounded, close-set spiral threads, somewhat granulated at the base. On the left side of the point of the beak and also on the earlier regular whorls they tend to become obsolete.
The shell grows to a length of 6.8 mm, its diameter 2.5 mm. (Original description) The small, vitreous, semitranslucent shell has an elongate-conic shape.. The protoconch contains 1.5,well rounded, smooth whorls. The postnuclear whorls are moderately well rounded, marked by rather strong, almost vertical axial ribs, which become weak toward the summit and which attain their largest development on the posterior third of the whorls. On the first whorl on the teleoconch these ribs are cusped; on the later ones they become less elevated.
The incremental sculpture is faint. The spiral sculpture begins on the early whorls with about four faint striae which grow sharper on the later whorls which carry four or five grooves with wider flattish interspaces between the periphery and the succeeding suture, with on the later whorls sometimes one or two on the anal fasciole. On the body whorl there are 16 or more in all. The last rib on the body whorl is more swollen than the others and usually darker in color.
It has six to seven convex whorls, usually with three (rarely five or six) prominent, rounded cinguli, or carinae, separated by much wider, broadly concave interspaces. The uppermost one is usually some distance below the suture, and is often stronger than the rest, producing a slight shoulder. On the body whorl, in specimens with six whorls, there are about seven to nine principal carinae, occasionally with a smaller one interpolated, and becoming more crowded anteriorly. On one specimen with seven whorls, there are thirteen principal cinguli.
The remaining whorls number about 6,. They are very convex, especially the penultimate and ultimate ones, the upper whorls forming a cone. The colour of the shell is slightly variable, the ground colour is light yellowish-brown, nearly plain or with darker flames and blotches, which are always present on the varix. The majority of the specimens has two or three series of darker spots on the upper whorls and two specimens have a row of large blackish patches near the suture of the body whorl.
Strongly convex to convex above, flattened below, with 5.2–5.8 whorls. Whorls rounded, sometimes with slight peripheral keel (the keel prominent in subadults); sutures shallow on most of spire, often deeper above last half of body whorl. Umbilicus rather narrow, symmetrical, deep, partly overlapped by reflected peristome, exposing upper whorls in oblique view. Mouth broadly oval, except where interrupted by penultimate whorl; last half of body whorl expanding and often descending markedly below penultimate whorl, sometimes also with downturn just behind edge of mouth.
The spire consists of about nine whorls. A nepionic (= the whorls immediately following the embryonic whorls) whorl and a half follows, with three spiral, latterly beaded cords. The remaining sculpture comprises a strong prominently beaded cord at the periphery immediately in front of which the suture is laid. On the body whorl between the periphery and the suture behind it, are about a dozen threads smaller than that at the periphery but equally and uniformly beaded, with subequal, smooth interspaces, and mostly alternating in size.
The two zones are separated by a zone of a little lighter shade which is as wide as the posterior zone. The whorls of the protoconch are decollated in all the specimens seen. The 8 or 9 whorls of the teleoconch are situated rather high between the sutures, feebly shouldered at the summit, and slightly constricted at the periphery. The early whorls of the teleoconch are marked by low, rounded, broad, almost vertical axial ribs which are wider than the shallow impressed spaces that separate them.
The spire can be high or low, broad or slender, according to the way the coils of the shell are arranged, and the apical angle of the shell varies accordingly. The whorls sometimes rest loosely upon one another (as in Epitonium scalare). They also can overlap the earlier whorls such that the earlier whorls may be largely or wholly covered by the later ones. When an angulation occurs, the space between it and the suture above it constitutes the area known as the "shoulder" of the shell.
Of these the upper 2 are smooth, the rest with crowded axial ribs. The post-nuclear whorls show more remote ribs, 7 or 8 on penultimate whorl, each rib with a small point near its middle, giving an angular appearance to these whorls, though the interstices are nearly regularly rounded. The upper part of the whorls are very faintly crenulate. The base of the body whorl shows very faint spiral striae, more conspicuous on the ribs and a few stronger ones on the sipgonal canal.
The ribs are best developed near the summits of the whorls and scarcely extend to the periphery. The spiral lirations are low, rounded, subequal, about 12 occur between the sutures upon the third and the penultimate whorls. These spiral lirations like the axial ribs appear strongest near the summits of the whorls. The periphery and the base of the body whorl are well rounded, the latter ornamented by about eleven lirations, which are similar in character to those between the sutures but much less strongly expressed.
The postnuclear whorls are strongly rounded. They are marked by almost knoblike axial ribs, which extend from the anterior limit of the posterior sinus to the periphery. These ribs are almost as wide as the spaces that separate them. In addition to this the whorls are marked by sigmoid axial lines of growth.
The six whorls, exclusive of the (lost) nucleus, are rounded. The; suture is very distinct. There is no axial sculpture, except incremental lines, unless on the (eroded) apical whorls. The siphonal fasciole is wide, extending from the suture to an obscure ridge which forms the shoulder of the whorl just behind the periphery.
The protoconch consists of two smooth bulbous whorls with five subsequent whorls. The axial sculpture shows only faint incremental lines. The spiral sculpture includes a very prominent thin sharp peripheral keel and fine spiral striae with wider interspaces, over most of the surface. The interspaces become more rounded and coarser on the base.
The length of the shell attains 8.3 mm, its diameter 3.2 mm. (Original description) The small, slender, acute shell is very pale brown or whitish. The apical whorl of the protoconch is minute, transparent, smooth, bubble-like, followed by 1½ faintly reticulate whorls. The 5½ subsequent whorls shows a deep appressed suture.
Also the spiral sculpture is lacking in the upper whorls. It becomes visible under magnification on the lower whorls as more or less clearly visible incised striae. The oval aperture below shows extensive rough furrows. The top of the aperture has a white callus that is not as prominent as in Tomellana.
The length of the shell attains 18 mm, its diameter 8 mm. The fusiform shell has an elongate, acute spire and contains 8½ whorls of which two in the protoconch. The subsequent convex whorls are somewhat angular and show numerous rounded, obtusely angulated longitudinal plicae. The shell is finely spirally lirate throughout.
The length of the shell varies between 20 mm and 35 mm. (Original description) The elongated, acute shell is yellowish white. It contains polished, more brownish whorls in the protoconch and nine subsequent whorls. The suture is appressed with an angular thread in front of it, separated by an excavated wide fasciole,.
The length of the shell varies between 5.32 mm and 8.04 mm. (Original description) The fusiform, shining shell is longitudinally coarsely ribbed (14 on the body whorl) and crossed by coarse raised striae. The protoconch consists of three brown conical whorls. The five whorls of the teleoconch are rounded at the sutures.
The length of the shell attains 15 mm, its diameter 4 mm. The spiraled, turreted shell has a whitish golden yellow color with many light brown spots. The sharp spire is much longer than others in this genus. The shell contains 10 whorls of which two smooth, brown whorls in the protoconch.
The length of the shell attains 6.3 mm, its diameter 2.2 mm. (Original description) The delicate shell is elongate-oval and contains 6 whorls. The protoconch consists of two convex whorls, each with ten valid spiral lirae. The apex is blunt, ending abruptly, with the first spire-whorl issuing from within it.
The length of the attains 8.5 mm, its diameter 3 mm. The solid, rugged shell has an elongate-fusiform shape. It contains whorls, including the protoconch of one whorl and a half, smooth, round, and blunt. The whorls on the spire are sloping, scarcely concave in the upper part, convex in the lower.
The colour of the shell is white. The spire is narrowly conical, measuring about 1½ times the height of the aperture. The protoconch consists of 1½ convex whorls, the nucleus is narrowly rounded and oblique. There are 4 to 5 subsequent whorls, regularly increasing, lightly convex and somewhat flattened below the suture.
The length of the shell attains 7 mm, its diameter 3 mm. (Original description in Latin) The delicate ovate- cylindrical shell is semi-transparent and has a milky white color. It contains 8-9 whorls of which 2⅓ or 3 whorls in the protoconch. These are pale reddish and rather thinly decussate.
The length of the shell varies between 20 mm and 35 mm; its diameter 10 mm. (Original description) The color of the shell varies from a rich rose color, with paler bands on the base, fasciole, etc., to yellowish white. The protoconch contains two whorls, followed by nine or ten subsequent whorls.
The length of the shell attains 3 mm. The minute, solid shell is whitish, except for the yellowish brown protoconch. The shell consists of 7 convex whorls, including 4 whorls in the protoconch. The suture is distinct, constricted, with a fringe of minute axial wrinkles on the fasciole in front of it.
The small, grayish-white shell has a claviform shape and a silky gloss. Its length attains 10.1 mm, its diameter 4.1 mm. The protoconch consists of two rounded and smooth whorls (with a relatively large and blunt apex), the teleoconch of 5 whorls. The shoulder is strong and its angle is not sharp.
The size of an adult shell varies between 12 mm and 17 mm; its diameter is 5 mm. (Original description) The small, acute shell is pale olivaceous. It contains 10 whorls, of which the first in the protoconch is smooth and the second obscurely peripherally keeled. The subsequent whorls are normally sculptured.
The size of the shell attains 12 mm, its width 4 mm. The small shell is lanceolate. It contains ten slightly convex whorls bearing revolving carinae, of which there are 4–5 on the whorls of the spire, and 10–12 on the body whorl. The middle carina is stronger, the interspaces clathrate.
The length of the shell attains 7.5 mm, its diameter 2.5 mm. The turreted shell has an oblong shape. It contains 7 whorls, of which the first two are smooth and convex. The subsequent whorls are convex and contains 10-11 ribs that hardly stand out from the background and spiral lirae.
Strongly convex to pyramidal above, rounded below, with 4.7–5.2 whorls. Whorls rounded, flattened above near the moderately deep sutures. Umbilicus narrow to very narrow, deep, ± symmetrical, partly overlapped by reflected peristome. Mouth almost round, except where interrupted by penultimate whorl, the last part of body whorl expanding markedly, descending slightly near mouth.
The length of the shell varies between 30 mm and 45 mm. The ovate, conical shell has a bluish ash color, traversed by distant lines, articulated and generally formed by oblong black points. The spots upon the upper whorls are larger, flamed, more or less numerous. The spire is composed of seven whorls.
The length of the shell attains 7.9 mm, its width 2.7 mm. The elongate-subfusiform shell has a pale pink color and contains 8 whorls, of which two are contained in the vitreous protoconch. The next 5 whorls are bicarinate. Around the middle of each whorl there is a single nodose liration.
The size of the shell varies between 10 mm and 17 mm. The imperforate, polished, solid shell has a conical-elevated shape with 9 whorls. It is yellowish-brown or olive, clouded with brown, the earlier 4 whorls dark bluish or greenish. The shell is spirally sulcate, the 2d whorl somewhat granulate.
The milk-white shell has an elongate-ovate shape. (Whorls of the protoconch in the type specimen ?) The five whorls of the teleoconch are moderately rounded, smooth between the well impressed sutures. The periphery of the body whorl is somewhat angulated. The base of the shell is slightly elongated, and well rounded.
The solid, regularly conical shell is straight-sided and imperforate. The shell contains up to 12–13 whorls. It is sculptured with regular spiral grooves and ridges, traversed by fine prosocline growth lines. The apex is minute, composed of a single smooth rounded whorl, Several whorls follow, each with 4 granose spiral ridges.
The thin, simple peristome is incomplete. The columellar margin is straightened, forming an obtuse angle where it joins the basal lip. The outer lip is sloping above, rounded at the base. The horny, concave operculum is thin with 6-7 whorls and has a raised lamina at the suture of the whorls.
The shell is purplish- black. The upper whorls are iridescent, mostly with dark red spiral bands or green transverse bands, 1 or 2 on the spire whorls, 4 to 5 on the body whorl. Sometimes there are a number of whitish zigzag bands near the aperture. The epidermis is very thin and shining.
Lobolytoceras is an extinct genus of ammonite in which only the inner whorls have large swollen ribs, later whorls have wrinkled growth lines which coarsen somewhat, near the aperture. The genus is known from the Lower Jurassic Toarcian of Europe. The type species L. siemensi (Denck) came from the Upper Toarcian of Germany.
The length of the shell attains 7 mm, its diameter 2 mm. (Original description) The solid, fusiform shell has a whitish color or is flesh-colored. It contains 9 whorls, of which two globose and almost translucent whorls in the protoconch. The third and sometimes the fourth whorl show simple spiral carinae.
The conical spire has a rounded apex. The protoconch contains two whorls with traces of a spiral sculpture. The five whorls of the teleoconch are slightly shouldered above, flat, the last one sharply angled at the periphery. The suture is marked by a deep groove behind the first roping of succeeding whorl.
In addition to the axial ribs the whorls are crossed by weakly incised spiral lines, which are of somewhat varying strength. There are probably 50 of these between the sutures. These lines and the feeble lines of growth between the ribs lend the whorls a cloth-like texture. The sutures are well impressed.
Another common case is the tetracyclic flower, which contains only one whorl of stamens, and therefore only four whorls in total. Tricyclic flowers also occur, generally where there is a single undifferentiated perianth. Flowers with more than five whorls are also not uncommon. The greatest variation occurs in the calyx and the androecium.
The length of the shell attains 3.5 mm, its diameter 1.7 mm. (Original description) The small shell is very solid, regularly biconical and sharply angled at the shoulder. Its colour is white, or pale buff with narrow bands of darker buff. It contains 5 whorls, including a protoconch of two smooth rounded whorls.
The length of the shell attains 13 mm, its diameter 4 mm. This rather solid shell had a high spire with 8 convex whorls, separated by a distinct suture. The whorls in the protoconch are smooth. The others show axial plicae that are a little arcuate and become sigmoid on the body whorl.
The large, elongate-ovate shell is yellowish to milk white. Its length measures 8.3 mm. The whorls of the protoconch are deeply vertically immersed. Only a part of the last volution is visible when viewed from above, their axis evidently being at a right angle to the axis of the later whorls.
A hair whorl is a patch of hair growing in a circular direction around a visible center point. Hair whorls occur in most hairy animals, on the body as well as on the head. Hair whorls, also known as crowns, swirls, or trichoglyphs, can be either clockwise or counterclockwise in direction of growth.
The elongate-ovate shell is white. Its length measures 6.3 mm. The whorls of the protoconch are obliquely immersed, only the tilted edge of the last volution is visible. The five whorls of the teleoconch are marked by two spiral keels which divide the space between the sutures into three equal parts.
The bluish-white shell has an elongate-ovate shape. Its length measures 3.2 mm. The whorls of the protoconch are smooth, obliquely immersed in the first of the succeeding turns, only two- thirds of the last volution projects above them. The five whorls of the teleoconch are well rounded and somewhat inflated.
Shell moderately large measuring 5 mm. It is yellowish-white, very elongate-ovate. The nuclear whorls are small, very obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The six post-nuclear whorls are subtabulately shouldered at the summit and well-rounded.
The size of the shell attains 32 mm, its width : 12 mm. The not very solid, whitish shell has a fusiform shape. The rather high shell is turriculate and contains seven convex whorls, subangular at the periphery, separated by a simple suture. The whorls contain longitudinal, nodulose ribs (13 on the penultimate whorl).
The shell is very small, measuring 1.4 mm. It is elongate- ovate, semitranslucent, bluish-white. The nuclear whorls are deeply, obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The four post-nuclear whorls are well rounded, feebly shouldered at the summit.
The length of the shell varies between 15 mm and 22 mm. (Original description) The fusiform shell contains ten to eleven whorls, the apical 1½ whorls being glassy and globular, the remainder are strongly longitudinally ribbed. The ribs number ten round the body whorl. The aperture is ovate-oblong, within purplish fuscous.
The length of the shell attains 4.5 mm, its diameter 2 mm. (Original description) The small, thin shell has an elongate- ovate shape. Its colour is pale buff, with a narrow subsutural baud. It contains six rounded whorls, including the two whorls in the protoconch, which is smooth, turbinate, and slightly tilted.
The length of the shell attains 5 mm, its diameter 2 mm. This small, brownish shell has a fusiform-ovate shape. It contains 6 whorls, including two convex whorls in the protoconch. It shows 10-12 ribs, Their superior part is almost obsolete and they are almost indistinctly subnodose at the sutures.
The small, claviform shell has a maximum length of 7 mm and a width of 2.8 mm. The protoconch contains at least 4 whorls and the teleoconch 5 whorls. The protoconch has 35 axial riblets on its penultimate whorl and 21 to 24 ribs on its last whorl. The collabral threads are weak.
On the bottom, however, the whorls are more curved and separated by a distinct suture. Shell with very sharp keel.
Operculum pale brown, nucleus slightly excentric, final three whorls evenly expanding in multispiral pattern. Height 6.5 mm, width 9 mm.
The shell can have up to 14 whorls. The shell of this species can be as long as 37 mm.
The nuclear whorls are regular. The apex is mammillated. The base of the shell is rounded. The umbilicus is carinated.
The shell is whitish, sparsely maculated with dark brown. The three whorls are convex. The outer lip is ascending posteriorly.
The four whorls are convex. The suture is very deep. The aperture is circular. The thin peristome is slightly expanded.
The spire is rather prominent,. The whorls are rounded. The oval aperture is large. It is pearly and iridescent within.
Catomeris polymerus small cluster, not crowded. Picture is very clear, showing operculars, shell plates, and whorls of imbricating basal plates.
The diameter of the shell is up to 3.25 mm, the height is up to 3.0 mm at 4.5 whorls.
The spire is conic. The apex is obtuse. The five whorls are subcarinate with sutures excavated. The aperture is rounded.
This nudibranch feeds on a variety of hydroids. Its egg mass is a broad coil of one or two whorls.
This, in turn was surrounded by several whorls of bracts that many homologize with petals and sepals in flowering plants.
The protoconch and subsequent whorls are eroded, remaining 4 whorls convex, angular, separated by a deep suture. The sculpture consists of axial ribs, rather remote on the upper whorls, 19 in number on penultimate whorl, nearly disappearing on the body whorl and numerous, raised striae or growth lines. These are crossed by spirals, of which a subsutural one is beaded, as well as those on the angle of keel ; above this latter are a few faint spirals and more numerous ones on lower part of whorls, 4 on penultimate, about 20 on the body whorl and siphonal canal, faintly beaded or crenuliferous at the points of intercrossing. The aperture is elongately oval, with a rather blunt angle above, ending below in a rather narrow siphonal canal.
The length of the shell attains 4.5 mm, its diameter 2.3 mm. (Original description) The small shell contains about six whorls including the blunt (defective) protoconch. They are white with a pale olivaceous periostracum, short and stumpy. The earlier whorls show two strong peripheral keels and a thread upon which the suture is laid.
The length of the shell attains 4.5 mm, its diameter 1.7 mm. (Original description) The minute shell is whitish, with a narrow brown band below the periphery in front of which the suture is laid. The protoconch is small with 1½ polished whorls followed by 4½ sculptured whorls. The suture is distinct, undulated not appressed.
The size of an adult shell varies between 13 mm and 159 mm and has a biconical shape. The shell consists of a protoconch of 2.5 whorls and 7-8 whorls in the teleoconch. The acuminate spire is turreted. The shoulder of each whorl is somewhat tabulate, with numerous septa crossing to the sutures.
It is followed by 4½ subsequent reticulate whorls. These are axially minutely ribbed, the sculpture passing into that of the normal subsequent whorls. The suture is distinct, not appressed. The spiral sculpture between the succeeding suture and the fasciole on the spire, consists of four equal and equally spaced threads with slightly wider interspaces.
Length of four whorls, 15.0 mm; of body whorl, 12.5 mm ; of aperture, 9.5 mm ; max. diam. 8.0 mm. (Original description) The small shell is stout, solid, decollate, with a whitish substratum and strong olivaceous periostracum. The four remaining whorls are closely coiled and have the aperture longer than the remaining portion of the spire.
The length of the shell attains 9.5 mm, its diameter 2.5 mm. (Original description) The small, whitish shell is very slender..It contains one smooth turgid whorl in the protoconch, and six smooth normal subsequent whorls. The whorls are but slightly convex. The suture is very distinct, its posterior margin slightly overhanging or dominant.
The shell grows to a length of 7 mm, its diameter 2 mm. (Original description) The small, brownish shell is coarsely sculptured, with six whorls exclusive of the (lost) protoconch. The suture is appressed, somewhat constrictedand obscure. The upper whorls show two prominent cords crossing the ribs without nodulation, the body whorl with six.
The length of the shell varies between 6.5 mm and 16 mm. (Original description) The small shell has a short- fusiform shape. It is whitish or feebly dotted with brown, with three brown whorls in the protoconch and four subsequent whorls. The apex of the protoconch is very small, smooth, the other two microscopically rugose.
The length of the shell attains 20 mm, its diameter 7 mm. The protoconch contains two smooth whorls. The subsequent whorls are sculptured with unequal spiral cords, as coarse as those on the body whorl. They are densely crenulate or beaded by close fine longitudinal laminae, much less prominent and closer than the spirals.
The shell has an elongate-conic shape. it is creamy yellow, with a narrow, golden brown band situated about one-fourth of the distance between the apex and suture posterior to the suture. (The whorls of the protoconch are decollated). The whorls of the teleoconch are slightly rounded, and feebly shouldered at the summit.
On the later whorls they are less prominent, and on the last are obsolete except at the shoulder which is feeble. Other spiral sculpture on the body whorl is of fine equal threads with narrower interspaces, extending from the shoulder to the siphonal canal. The suture is distinct, not appressed. The whorls are well rounded.
The length of the shell attains 11 mm. (Original description) The small, white shell has a translucent thin periostracum and about five whorls (the protoconch eroded). The spire is slightly longer than the aperture. The early whorls are rounded with about fifteen slender, low, arcuate, protractive, axial riblets which are obsolete on the body whorl.
The length of the shell attains 17 mm, its diameter 8 mm. (Original description) The fusiform shell is moderately stout, with a high, regularly tapered spire, and very convex, shouldered whorls. These have strong, oblique, transverse ribs rendered nodulous by well- developed, raised cinguli. The shell contains six whorls, below the chestnut- colored protoconch.
The shell of Flemingites is evolute so that all whorls show externally. Whorls are robust, slightly embracing, usually a little higher than wide and increasing very slowly. The venter (outside rim) is somewhat flattened and usually much narrower that the widest part of the whorl. Strong, always single, lateral ribs are confined to the sides.
The size of an adult shell varies between 15 mm and 20 mm. The shell is subquadrate-ovate. It has a buff color, the remains of the periostracum is dark brown. The upper ribs are white and the shell is dotted with numerous red spots. The protoconch contains 1½-2 whorls, the teleoconch 6 whorls.
The shell up to 15 mm high with rather high spire and a rounded body whorl. The protoconch is small, distinctly cyrtoconoid with 2.5 smooth whorls. The teleoconch contains 6-7 convex whorls, with a sculpture of regular spiral cords, broader than the interspaces. Its axial folds become distinctly flexuous on the body whorl.
The size of an adult shell varies between 14 mm and 30 mm. The smooth shell is ovate, conical, and slightly ventricose. The spire is composed of seven whorls, rounded and swollen at the upper part, especially the lowest, which is larger than all the others united. The three upper whorls are finely plaited.
The three whorls of the protoconch are finely reticulated. The subsequent whorls are crossed by many regular decurrent cords, flattened, about the same width as their intervals and by filiform longitudinal folds irregularly spaced. The body whorl is large and inflated, occupying 4/5 of the total height. The aperture is wide and, elongatedly oval.
Above the upper keel the whorl slopes to the suture, below the lower the base is concavely excavated. The colour of the shell is pale yellow. It contains four whorls, plus the protoconch. These whorls are wound obliquely..The topmost whorl is undulated by about sixteen broad radial ribs, which disappear on the next whorl.
The shell contains about 10 whorls, The others are slightly concave above the suture and then slightly convex or almost flat. The whorls are crossed by 14-16 oblique longitudinal ribs. Very fine spiral striae, crossed by equally fine lines of growth, are observable under a powerful lens. The oblique aperture has an irregular shape.
The straw-yellow shell is large and has an elongate-ovate shape. Its length measures 2.4 mm. (The whorls of the protoconch are decollated.) The turns of the whorls of the teleoconch turns are rounded, and have subtabulate summits. They are marked by lines of growth and numerous fine, closely placed, wavy, spiral striations.
The length of the shell attains 4.5 mm, its diameter 1.25 mm. (Original description) This neat little species has the usual fusiform shape,. It contains five whorls, exclusive of the apical, not present in our specimens. The whorls are clathrate, with longitudinal ribs and spiral lirae, these being pale ochreous-white, the interstices darker ochreous.
There are 3½ subsequent whorls. Their sculpture consists of narrow, slightly oblique ribs which pass across the spire-whorls from suture to suture and on the body whorl follow down on the anterior canal to its tip. There are 8 ribs on the body whorl. The spaces between the ribs are wide, flat and smooth.
The size of the shell varies between . The color pattern of the shell varies from very light brownish to purple-brown. Some specimens contain only 6 whorls instead of 7 as in the holotype. The upper whorls are smooth, then follows the body whorl with scarcely 2 rows of granules, instead of 7 or 8.
The second whorls is radiately ribbed and also swollen. The remaining whorls increase regularly in size. They are slightly contracted above and below, nearly straight towards the middle, with two spiral rows of pointed nodules, connected by slight spirals and oblique radiating ribs. Moreover, the shell has a thin spiral, just above the linear suture.
The thick columella is emarginate, thickened towards the base and forming a toothlike angle, at the junction with the basal margin. The colour of the shell is yellowish-olive. The top whorls, a zone at the base of the whorls, especially of the last oneare rose-coloured. The base is tinted with the same colour.
The milk-white shell has an elongate-conic, turreted shape. Its length measures 4.4 mm. The three whorls of the protoconch are small, helicoid, rather loosely coiled and elevated. They have their axis at a right angle to the axis of the later whorls and about one-third immersed in the first of them.
The length of the shell varies between 8 mm and 25 mm. (Original description - in French) The solid shell has a polished appearance. It has a flesh color or is pinkish while the acute, turriculated shell contains 10 slightly convex whorls, separated by an oppressed suture. The protoconch contains two smooth and papillary whorls.
The first three whorls of the teleoconch are probably lost. The second of those left has eighteen ribs: the antipenultimate twenty-four and the penultimate twenty-two ribs. On this they are much weaker than on the preceding whorls. The intercostal spaces are broad and shallow, scarcely sunk below the general surface of the shell.
The length of the shell attains 2¾ mm, its diameter 1½ mm. (Original description) The minute, ovate-fusiform shell contains 5 slightly convex whorls, including 1½ smooth whorls in the protoconch. Its color is blackish to reddish with below the suture a series of white granules. The 12–14 longitudinal ribs are slightly oblique.
They are erect and bristly, forming an irregular crown. The fronds occur in two whorls of 10-12 fronds each, with the inner of the two whorls bending downward towards the trunk. The stipe is covered with glossy scales that have narrow, pale and fragile edges. Two to four sori occur per fertile pinnule.
The white shell has a broadly conic shape. Its length measures 3.1 mm. The whorls of the protoconch are smooth, largely obliquely immersed in the first of the succeeding turns above, which only about half of the last turn projects. The five whorls of the teleoconch are moderately rounded, slopingly shouldered at the summit.
Below the whorls are angulated and tuberculated at the angles. These rather sharp tubercles number 12 on the body whorl. The transverse striae upon the upper concave portion of the whorls are finer and less conspicuous than those below the row of tubercles. The aperture is narrowed in front and measures about ½ the total length.
The shells of R. horei are composed of six reddish-brown whorls, which are smoothly curved. There is a white band on all whorls. The overall height of the shell ranges from , and diameter from . The visible soft parts of the animal are colored grey or olive green, with a brown foot and white sole.
The others are convex and crossed by opisthocline ribs. The sutures are almost obsolete. The spiral lirations in this species are about six in number in the upper whorls, and twenty in the body whorl. They do not exist in the depression at the upper part of the whorls, which is only finely striated.
The length of the shell attains 5 mm, its diameter 2 mm. (Original description) This is a pure-white turreted little species, with a conspicuous dorsal squarrose brown spot just below the suture of the body whorl. The shell contains seven whorls. The whorls are ventricose and ribbed longitudinally, crossed with a few conspicuous lirae.
The shell size varies between 17 mm and 27 mm The ovate shell is slightly cylindrical and is blunted at its summit. The short spire is flattened. It is composed of five whorls. The two last whorls are much more swollen, and covered upon their whole surface with very fine and very close transverse striae.
The first two whorls are rounded, destitute of spines or carina. The last three whorls are somewhat geniculate, angled at location of carina. The body whorl is large, sometimes with an occasional spine below the carina. The epidermis is light horn in color, nearly white at apex, with microscopic longitudinal revolving striae and shining.
The light-yellow shell has an elongate-conic shape. lts length measures 3.8 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns. The six whorls of the teleoconch are cylindric in outline, moderately rounded in the middle and very much so at the very strongly shouldered summit.
The shell is very elongate-ovate, bluish-white, measuring 3.5 mm. The whorls of the protoconch are deeply obliquely impressed in the first of the succeeding turns. The five whorls of the teleoconch are well rounded. They are marked by four strong spiral cords between the sutures, which are separated by narrow, deeply incised channels.
The shell is large and measures 5.2 mm. It is elongate-ovate, strongly umbilicated, yellowish-white. The nuclear whorls are deeply immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The six post-nuclear whorls are well rounded, and feebly shouldered at the summit.
The thin, large shell has an elongate-ovate shape, tapering very regularly to an acute point. Its length measures 13.6 mm. The shell is narrowly umbilicated. The whorls of the protoconch are very small, deeply obliquely immersed in the first of the succeeding whorls, above which only the tilted edge of the last volution projects.
The elongate-ovate shell is white. Its length measures 2.1 mm. The whorls of the protoconch are small, obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are moderately rounded, ornamented by decidedly retractive axial ribs which practically terminate at the posterior edge of the supraperipheral spiral keel.
The bluish-white shell is moderately large, measuring 3.1 mm. Its shape is very elongate-ovate, with a very regular, conic spire. The nuclear whorls are small, obliquely immersed in the first of the succeeding turns, above which a portion of the last two volutions only project. The six post-nuclear whorls are flattened.
The large, broadly conic shell measures 6.6 mm. It is milk- white and shining. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The seven whorls of the teleoconch are moderately rounded, somewhat shouldered at the summit.
The broadly conic shell is bluish-white. It measures 4.5 mm. The nuclear whorls are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six post-nuclear whorls are well rounded, slightly contracted at the suture and appressed at the summit.
The milk-white shell is elongate ovate and deeply umbilicated. The whorls of the protoconch are small, deeply obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are increasing very regularly in size, rather high between the sutures, well rounded with strongly tabulated summits. The sutures are strongly marked.
The shell has an ovate shape. Its length measures 2.3 mm. The 2 ½ whorls of the protoconch form a depressed helicoid spire whose axis is at right angles to that of the succeeding turns. The four whorls of the teleoconch are well rounded, moderately contracted at the sutures, and very slightly shouldered at the summit.
The height of the shell attains 7.5 mm, its width 3 mm. (Original description) The strong, whitish shell has a fusiform shape. It contains six whorls, of which three form a large, convexly-whorled, smooth and shining protoconch. The whorls of the teleoconch are moderately convex, slightly concave below a strong, yellowish, subsutural spiral.
The length of the shell attains 21 mm, its diameter 8 mm. (Original description) The solid, oblong- fusiform shell is yellow or ochreous-brown. It contains 8-9 whorls, of which the two whorls in the protoconch are smooth, globose and blunt at the actual apex. The remainder is suturally impressed, angled, longitudinally multicostate.
The small, claviform shell has a maximum length of 6 mm and a width of 2.1 mm. The protoconch contains at least 6 whorls and the teleoconch 5½ convex whorls. The protoconch has 15–16 axial ribs on its penultimate whorl and 21 to 24 ribs on its last whorl. The collabral threads are strong.
The protoconch is glassy, white, mammillate and consists of two whorls. The other whorls number about six, of which the body whorl forms more than half the shell. The sculpture consists of (on the body whorl) 12 rounded straight ribs, widest near the periphery, extending across the whorls and fainter near the suture and on the siphonal canal. These are crossed by about (on the body whorl) 16 rounded even threads, which pass over the ribs and interspaces without any marked nodulation and are separated by wider interspaces.
Below the subsutural band the whorls are obtusely angulated, but without a distinct carina. Commencing at the shoulder and extending a short distance below it are numerous oblique, not very elevated, longitudinal ribs, which fade out before reaching the middle of the whorls. The whole surface of the whorls, including the ribs, is covered with conspicuous, raised, spiral cinguli, between which there are two or three smaller ones, separated by deep concave grooves of about the same breadth. The whole surface is covered by distinct, raised lines of growth.
The teleoconch contains three whorls. The protoconch consists of 3½ whorls, of which the first is turbinate, slightly tilted and engraved with microscopic spirally punctured lines, followed by two transitional whorls keeled at periphery, and ornamented by fine close obliquely radiating riblets. The adult sculpture : on the body whorl, fifteen spiral cords, of which the third and eighth are prominent, expressing the angle above and below the barrel of the whorl, the basal cords are broken into beads. The penultimate whorl shows six, and the antepenultimate with three spirals.
The length of the shell attains 6.5 mm, its diameter 3.5 mm. (Original description) The small, delicate shell is fusiform with an elevated and very acute spire and a slightly elongated, straight siphonal canal. The whorls are angulated and turreted, sculptured with ribs and revolving lines, which form rows of small, sharp nodules at their intersection around the periphery, and especially at the shoulder. The shell contains four whorls below the protoconch, which is unusually elongated and composed of four pale chestnut-colored whorls, which are finely and regularly cancellated.
The sculpture consisting of small pointed nodules set on the periphery of the whorls, a little in advance of midway between the sutures. They number ten to fourteen on each whorl, except the last half-whorl in the adult, where they begin to be obsolete. The tips of these nodules and a line just in advance of the suture are white as compared with the general translucent pinkish or fleshy hue. These nodules are a little compressed in the latter whorls in a direction transverse to the whorls.
The whorls of the teleoconch are slightly convex, strongly lirate below the suture, with at first 2, lower on 3 strong spiral lirae on each whorl, 14 in number on the body whorl and 2 faint ones below subsutural liration, more or less visible on upper whorls. The whorls are crossed by thick, rounded ribs, making the lirae slightly beaded, 9 in number on penultimate whorl, faint on last one, which has a very strong rib behind the peristome. Moreover the shell is crossed by conspicuous growth lines. The aperture is oblong and angular above.
The sculpture of the shell shows a single, sharp keel round the periphery, showing at the base of the spire-whorls. The shell has a thread- like spiral rib below the rather deep suture of each whorl (varying in position), numerous but slight flexuous striae below the rib, and in some specimens minute close-set curved longitudinal striae on the upper whorls. The base is nearly smooth or marked only with microscopic lines of growth. The seven whorls of the short spire are compressed, slightly shouldered by the infrasutural rib.
They are marked by sublamellar, protractive axial ribs, which extend undiminished to the summit of the whorls, rendering this crenulated. There are 14 of these upon the first three whorls, 16 upon the fourth to eighth, 18 upon the ninth, 20 upon the tenth and eleventh, and 21 upon the penultimate turn. The intercostal spaces are about one and one-half times as wide on all but the last three whorls. On the latter they are about as wide as the ribs and terminate a little posterior to the suture.
The spirals on the later whorls are stronger, consisting of primaries with alternating finer, secondary threads in pairs; transverse ribs stronger and more numerous on the later whorls (25 on the last) and more sharply defined. The intersecting ribs and spirals form a beautiful cancellation ornamenting the whorls up to the margin of the groove, where the ribs end abruptly. In the groove, lines of growth and fine, subequal spirals form the only sculpture. The upper margin of the groove is marked by a sharp carination sloping steeply to the suture.
Shell is solid, of a light ochre color, biconcave, regularly striated with very fine axial riblets, with numerous periostracal hairs (visible in this well cleaned sample as hair pits), covering the whole surface. The spire is deeply sunken, with 3¾-4½ whorls. Whorls are rounded, first whorls very narrow, the last one very large, and embracing the preceding one, distinctly descending in front. The umbilicus is deep, and very small (about 1/20 of the width of the shell) and partly hidden by the expanded columellar side of the peristome.
The length of the shell attains 8 mm, its diameter 2.5 mm This is a remarkably graceful, attenuate-fusiform shell. It contains seven whorls, of which three in the protoconch. The shell is conspicuous for its strong yet thread-like angled keels, one upon the upper whorls, two on the lower, while a rectangular appearance is obtained by the six longitudinal remote yet regular ribs on each whorl, these not being exactly continuous, as is the case with the sculpture of some Mangiliae. The apical whorls are beautifully cancellate.
The spiral sculpture of, on the upper surface of the last whorl, two small and two strong spiral alternated ribs, one of the smaller just below the suture; a large spiral on the periphery and four on the base. These are crossed by numerous obliquely radiating threads, which make the early whorls coarsely reticulate with nodules at the intersections, while in the later whorls the radiations become less marked and the spirals more numerous and more conspicuously nodulous. The whorls are rounded, while the apex is a little blunt. The suture is distinct, not channelled.
The whorls are generally a little carinated on the upper surface, especially the earlier whorls, by one or two prominent spiral riblets. Below they are full and rounded, with a small but well-marked umbilicus. The radiating sculpture of the lines of growth is occasionally irregular so as to form faint waves, but usually inconspicuous. The spiral sculpture consists of fine close little-raised threads, with on the upper surface one and on the periphery another stronger thread or carination, seldom nodulous, and stronger on the earlier whorls.
The milk-white shell has an elongate, ovate shape. Its length measures 2.2 mm. The whorls of the protoconch are completely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects, which shows faint traces of spiral lirations. The whorls of the teleoconch are ornamented with two strong spiral lamellae, the first of which renders the summit of the whorls decidedly tabulated, while the second one is situated a little posterior to the posterior termination of the anterior third between the sutures.
The small shell measures 2.1 mm. It is umbilicated, elongate-ovate conic, semitransparent, polished. The 2½ whorls of the protoconch are moderately large, helicoid, elevated, about one-fifth immersed in the first of the succeeding whorls and having their axis at a right angle to them. The five whorls of the teleoconch are flattened, angulated at the periphery and weakly shouldered at the summit; the latter falls somewhat anterior to the periphery of the preceding whorl and lends to it a somewhat constricted appearance at the well-impressed suture.
These lirations become more conspicuous on the lower whorls, which have the median keel, another one just below the suture and in some parts traces of a third one, running entirely or partly in the deep suture. Moreover, the whole shell is covered with microscopic, close-set, spiral threads. This sculpture is crossed by conspicuous riblets, fainter on the upper whorls, very strong on the lower ones, and by very fine growth- striae. The riblets are not close-set and form conspicuous spines below the suture of the lower whorls.
The width of the shell can reach up to 10 mm. In the largest specimen there are almost two teleoconch whorls that initially attach very high onto the protoconch, with the result that the larval shell seems to be embedded rather obliquely within the younger whorls. The diameter of the teleoconch increases rapidly, the result being a shell that strongly resembles Planorbarius (but, of course, dextral). The surface of these younger whorls bears flexuous growth lines, and a dense and very fine, somewhat irregular spiral striation, only visible where light reflects on the shell.
The shell is very small, pupiform, vitreous. The whorls of the protoconch are smooth, deeply obliquely immersed in the first of the succeeding turns, above which only a portion of the tilted edge of the last volution projects. The early whorls of the teleoconch are well rounded, later ones flattened, somewhat excurved at the shouldered and beaded summit, and slightly contracted at the sutures. The whorls are marked by strong rounded, tuberculated axial ribs, which are decidedly protractive on all but the last whorl; on this they are only moderately protracted.
It is a perennial subshrub with small pink bell-shaped drooping flowers borne in compact clusters at the ends of its shoots, and leaves in whorls of four (whence the name). The flowers appear in summer and autumn. The distinction between E. tetralix and the related species Erica cinerea is that the linear leaves are usually glandular and in whorls of four, while those of Erica cinerea are glabrous and borne in whorls of three. The leaves of Calluna vulgaris are much smaller and scale-like and borne in opposite and decussate pairs.
The whorls of the protoconch of the type specimen are decollated and probably the first two whorls of the teleoconch are missing. The remaining 9½ whorls of the teleoconch are flattened very high between the sutures, and narrowly shouldered at the summit. They are marked by closely crowded, quite regular, well rounded, almost straight, slightly protractive axial ribs;18 ribs occur upon the first four of the remaining turns; 20 upon the fifth to seventh; 22 upon the eighth, and 26 upon the penultimate whorl. The intercostal spaces are a little narrower than the ribs.
The small shell is elongate-conic, rather stout and semitranslucent. The nuclear whorls are small, two and one-half, forming: a depressed helicoid spire, whose axis is at right angles to that of the succeeding turns, in the first of which it is about one-fourth immersed. Post- nuclear whorls are flattened, moderately contracted at the sutures and slightly shouldered at the summit, marked by very strong, lamellar, somewhat retractive axial ribs, of which 14 occur upon all of the whorls. The termination of these ribs form cusps at the summits.
The length of the shell attains 17 mm, its diameter 6 mm. (Original description) The fusiform shell has a fairly broadened body whorl, but a very attenuate spire It contains 9 whorls, of which the two whorls in the protoconch are smooth, diaphanous, and globular. The remainder show strong, rounded, shining, nodulous longitudinal ribs, about eight in number on the penultimate and body whorls. The suture is strongly raised-plicate, and spirally furnished with regular raised revolving lines, chestnut in colour, thus contrasting with the paler ochreous brown surface.
At the nodes are whorls of six leaves, up to 2.4 cm long, that regularly or irregularly fork two to four times. The leaves are positioned perpendicular to the axis in proximal portions of the plant but inserted at acute angles in distal portions. Fertile branches are produced in a terminal strobilus (8.5 cm long), which is subtended by whorls of normally developed leaves. It consists of a central axis and up to 16 whorls of fertile units, each of which consists of a bract and 6-10 sporangia.
The length of the shell attains 7 mm; its width 2 mm.. (Original description) The shell has a shortly fusiform shape and is light brown. It contains 6 ½ whorls. The nucleus consists of 1½ rather large, globose, glassy shining whorls. The four whorls following are strongly keeled around the middle, concave above, with two or three fine spiral lirae, and also concave below the carina, margined at the upper and lower boundaries by a fine thread-like lira arcuately or flexuously elevately striated above the carina, and obliquely but in an opposite direction, beneath it.
This nudibranch feeds on the striped anemone Anthothoe chilensis. Its egg mass is a simple spiral consisting of three complete whorls.
Its genus name comes from the Greek prefix sciado- meaning "shadow" and pitys, meaning "pine"; the specific epithet means "with whorls".
The spire is very short and depressed. The apex is planate. The suture is linear. The 3½ subplane whorls increase rapidly.
The flowers are hermaphrodite and very small, and are arranged in whorls of three on the upper part of the branches.
The shell of Pseudiberus zenonis has five whorls. Its height is 7–8 mm, and its diameter is 17–20 mm.
The art form is used in spindle whorls, house posts, welcome figures, combs, bent wood boxes, canoes, and other cultural objects.
The shell has 4 whorls. The width of the shell is 7 mm. The height of the shell is 8.5 mm.
The length of the shell attains 10 mm. It contains eight whorls, four in the protoconch and four in the teleoconch.
Under a simple lens the two apical whorls appear almost smooth; but by the aid of a more powerful microscope they are seen to be covered with numerous close spiral series of minute granules. The consequent whorls are convex with an angulate, but not flanged periphery. They become rather flat below the angle. The clathrate sculpture is indistinct.
The subsequent upper whorls are nearly smooth, but with a strong keel, which is at first spinous. The spines are horizontally spreading, but soon become more or less upturned and have the character of erect trigonal spines. On the following 3 whorls they are spreading again on the body whorl. The spines number about 20 on the body whorl.
The length of the shell varies between 14 mm and 27 mm. (Original description) The shell is moderately large, stout and ovate. The body whorl is very large in proportion to the rest of the shell. Some of the upper whorls are ribbed and nodulous, while the two lower whorls have only spiral lines and lines of growth.
The length of the shell attains 3 mm, its diameter 1.5 mm. (Original description) The minute, white, acute shell has a sinusigera protoconch consisting of 4 whorls followed by two subsequent whorls. The suture is appressed, bordered in front by close, short, axial wrinkles. The anal fasciole is slightly concave, wide, extending to the angle at the shoulder.
The shell contains 7 whorls, of which a little more than one forms a convex, smooth protoconch. The subsequent whorls are separated by a deep, waved suture. They are convex, angular and slightly excavated at their upper part. They show rather strong, rounded, oblique, axial ribs (11 on the body whorl), those behind the peristome stronger.
The length of the shell attains 9 mm, its diameter 6½ mm. The fusiform shell is grayish-white with red spots within the suture and elongated flammules on the body whorl. The shell contains 10½ whorls of which 1½ in the vitreous, convex protoconch. The whorls of the teleoconch are slightly concave below the distinct suture.
The length of the shell attains 15 mm, its diameter 6 mm. (Original description) The small shell is acute and thin. It has a dull waxen color with a darker blotch behind the aperture and a dark brown protoconch consisting of a smooth and polished whorls. The nine subsequent whorls show a spiral sculpture of obscure fine threads.
The length of the shell attains 5 mm, its diameter 2 mm. The small, subconical shell contains 6 whorls. It has a whitish color with orange brown brands interrupted by the ribs. The whorls are convex and show 12 not very robust ribs and rather shallow decurrent spirals (on the penultimate whorl 19 ribs and 3 to 4 spirals).
The length of the shell attains 8 mm, its diameter 3 mm. The shell is turriculate and has a uniform, grayish white color. It contains a very high spire, composed of 8 whorls divided by two decurrent depressions. The superior is shown under a narrow subsutural bead and the lower encircles the base of the upper whorls.
The size of an adult shell varies between 20 mm and 40 mm. The turreted shell is yellowish brown. The upper portion of the whorls are covered with large brown maculations and a revolving series of small brown spots just above the lower carina. The whorls are smooth and concave above, with revolving raised lines below the bicarinated periphery.
Kermia caletria is a species of sea snail, marine gastropod mollusk in the family Raphitomidae. Measuring a length of 4.5 mm, with a 1.5 mm diameter, the beautiful species is white and slightly ochraceous at the sutures. It contains seven whorls, turreted, two smooth whorls being apical, finely and regularly clathrate. The aperture is sinuously-oblong.
It contains 9 whorls, including a two-whorled protoconch. The minute turbinate protoconch is finely spirally grooved. In contrast to this the first adult whorl appears with a broad shoulder, beneath which are two conspicuous keels. Fresh spirals arise by intercalation on the subsequent whorls, till alternately larger and smaller, they amount to sixteen on the penultimate.
These are rounded but much impressed at the sutures. The two almost vitreous whorls in the protoconch are most delicately decussate. The remainder of the whorls are closely obliquely ribbed, crossed by many spirals, slightly gemmulate at the points of junction. This gives a white shining appearance to the ribs, which on the body whorl number about twenty- six.
The light brown, shining shell has an elongate-conic shape. The length of the shell measures 17.6 mm. The 2½ whorls of the protoconch are small and polished, and have a depressed helicoid shape. Their axis is at a right angle to the axis of the later whorls and about one-sixth immersed in the first of them.
The spire high and conical. The protoconch has probably 3 to 3½ whorls, but the extreme tip is broken and only 2 remain. They are yellow and conical, and are microscopically scored by minute narrow raised lines which are straight above, but below slope very obliquely to the left. There are 4½ whorls below the apical nucleus.
The suture is deep, not very oblique. The subsutural band is rather broad, concave, nearly smooth, contrasting strongly with the rest of the whorls. Its sculpture consists only of the deeply concave lines of growth, parallel with the notch in the outer lip. Below the subsutural band the whorls are abruptly swollen, forming a rounded shoulder.
The shell reaches a length of 13 mm, and a diameter of 6 mm. The subfusiform, turreted, white shell has an pointed spire. It contains 6 whorls, of which only 1½ whorl in the protoconch. The subsequent whorls are convex with axial, close and elevated ribs and elevated, decurrent, parallel threads, forming nodules on the cross-points.
The embryonic whorls are of a rich ruddy-orange tint. The spire is perfectly conical, scalar, high, sharp. The protoconch consists of 3½ ruddy, smooth, embryonic whorls, which are globose. They are divided by an impressed suture, and rise to a small, blunt, round top, in the middle of which the extreme tip just barely rises into sight.
These puckerings rise on the upper whorls into finely and sharply tubercled straight riblets, which on the body whorl are numerous, obsolete, and oblique. On the penultimate whorl there are about 20 of them. Spirals: in the sinus-area there are just perceptible traces of spiral lines. About the angle of the whorls small impressed furrows begin to appear.
The length of the shell attains 14 mm. (Original description) The fusiformly ovate shell is chocolate-brown at the base of the whorls and lighter above. It is indistinctly banded with white round their middle, the band being most conspicuous on the ribs, which are also white at their upper extremities. The shell contains 8 whorls.
The lightly elevated fasciole is very finely transversely striated. The colour of the shell is pale fulvous, usually with a broad spiral band of pink on the centre of the whorls. The spire is high, acuminate, turreted, nearly twice the height of the aperture. The protoconch consists of 1½ smooth convex white whorls, the nucleus broadly rounded.
The length of the shell attains 11 mm, its diameter 2.5 mm. (Original description) The small, solid, ice-white shell has a subcylindrical shape and is very glossy. The shell contains 7 whorls, inclusive of the protoconch—a small smooth dome of two whorls. The only spirals on the shell are four lines on the snout.
Only 3.5 whorls remain. The last is small, but is a little tumid, with a short rounded base and a very short lop-sided snout. The suture is rather oblique, well marked by the angulation of the whorls and by a slight contraction of the whorl just above. The aperture is elongately oval and rather small.
The shell is small or medium-sized, slender or moderately slender. The whorls are angulated at the periphery or rounded. The protoconch is slender or moderately slender, the apex generally rising abruptly, consisting of about 2½ or 3 whorls. The body whorl or half whorl bears curved, protractive axial riblets and generally bulges at its periphery.
The nucleus is wanting. The sculpture consists on the upper two whorls, of nearly simple concentric ribs. On the next two, the ribs are crossed by two spiral lirae, producing short tubercles on the ribs, where they cross them. The last two whorls have plicae near the channelled suture, with a row of tubercles, bordering on the infrasutural sulcus.
The length of the shell attains 6.4 mm, its diameter 2.5 mm. (Original description) The solid, white shell contains 7 whorls, including the blunt protoconch of 2 smooth depressed convex turns. The spire-whorls are sloping, swollen above the linear somewhat undulating suture, and barely swollen below it. The base of the shell is slightly contracted.
The thick shell is opaque The shell grows to a length of 6.7 mm. The teleoconch contains seven flat whorls with a deep suture. The body whorl has 15 revolving lines, the upper ones more distant, about four lines on the next whorl, the number of lines diminishing on the upper whorls. The columellar tooth is distinct.
The teleoconch contains 8¾ whorls. The early whorls are well rounded, the later ones almost flattened. All are appressed at the summit. They are marked by slender, well-rounded, low, decidedly retractive axial ribs, of which 24 occur upon the first four turns, 22 upon the fifth and sixth, 26 upon the penultimate, and 30 upon the last turn.
The pale yellow horn-colored shell has a broadly elongate conic shape. Its length measures 5.5 mm. The 2½ whorls of the protoconch are well rounded. They form a decidedly depressed helicoid spire having its axis at right angles to that of the succeeding whorls, in the first of which, the tilted edge is about one-fourth immersed.
The cords are made up of very fine hemispherical beads. The base has fine microscopically beaded spiral cords. The protoconch and primary whorls are a dull cream color or white, the rest of the shell is a golden orange, with a golden metallic iridescent sheen. The entire teleoconch (body whorls) has deep orange axial streaks and flammules.
28-32 (Description by Dall) The larval shell is multispiral. The adult shell shows a small blunt protoconch of several (usually) swollen whorls, closely arcuately axially ribbed. This protoconch is dark and sculptured with criss-cross lines, strongly contrasting with the rest of the shell. The succeeding short-fusiform whorls have an axial and (fainter) spiral sculpture.
The length of the shell attains 7.5 mm, its width 3 mm. (Original description) The fusiform, pellucid, white shell has a rather short siphonal canal. It contains about 8 whorls, of which about 3 form the protoconch, which is large, convexly-whorled, at first smooth and then axially ribbed;. The teleoconch whorls are angular and concave above.
The length of the shell attains 30 mm. (Original description) The shell is of medium size, medium to moderately slender, lymneiform. The whorls are flattened in the young state but rounded in adults. The protoconch consists of 2¾ whorls, the first very small and smooth, the remainder microscopically diagonally cancellate, the diagonal lines being rough and irregular.
The striae of the base become coarser toward the axis. The colour of the shell is dark olive-brown or greenish, minutely tessellated all over with a slightly darker shade of the same hue. The small protoconch is conical with two slightly spirally striated whorls. The teleoconch consists of five whorls, those of the spire keeled above the middle.
The bluish white shell is rather large, its length measuring 5.8 mm. It has an elongate conic shape. The whorls of the protoconch are obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The almost seven whorls of the teleoconch are moderately rounded, and appressed at the summit.
The bluish-white shell is of medium size and has an elongate- ovate shape. Its length measures 2.8 mm. The whorls of the protoconch are deeply immersed in the first of the succeeding turns, which gives the apex a truncated appearance. The 5.8 whorls of the teleoconch are appressed at the summit, the later ones overhanging.
Coeloceratidae is a family of ammonites belonging to the Eoderoceratoidea that lived during the Early Jurassic. Shells are evolute, tending to be broadly discoidal with depressed whorls bearing primary and secondary ribs that branch from outer lateral tubercles. Most of the included species have coronate inner whorls and outer tubercles only. In general, Coeloceratids resemble the Middle Jurassic Stephanoceras.
The height of the small shell attains 6 mm. Its color is all white. Or the upper surface of the whorls show very small distinct rose-red dots sparsely distributed over the white ground color on the raised nodules of the sculpture. The spire contains five or more inflated strongly sculptured whorls, and a smooth nucleus.
For terms see gastropod shell The shell is circular in outline, with 3.2 - 3.3 whorls. The last whorl is wider immediately before the aperture, and is not much descending. Compared to Vallonia costata, the aperture is not very oblique, and the lip is weaker than in that species. Vallonia pulchella also has slightly more elevated whorls than Vallonia costata.
Shells of Xenophora crispa can reach a size of . They are trochoid, depressed-conical shells, non-porcellanous ventrally, with narrow peripheral edge and 7-8 whorls decorated with irregular spirals wrinkles. The base is slightly concave. Foreign objects are usually attached to all whorls of these shells, usually mollusk shells, pebbles, or small pieces of coral rock.
The length of the shell attains 4 mm, its diameter 1.5 mm. (Original description) The small shell is turreted. The protoconch contains 4 whorls, glassy, the last volution carinated and delicately longitudinally ribbed. The 4 subsequent whorls are strongly carinated in young shells but in the adult the body whorl becomes gently rounded, losing the carina.
The color of the shell is yellowish or grayish, more or less mottled and marbled with green or brown, the base is white, green or brown. The shell contains 12–14 whorls. The upper ones are slightly extended outwards and plicate, tuberculate or undulating at the sutures. The folds or tubercles are obsolete on the lower whorls.
The ovate shell is white. Its length measures 1.4 mm. The whorls of the protoconch are deeply obliquely immersed in the first whorl of the teleoconch above which only the tilted edge of the last volution projects. The four whorls of the teleoconch are moderately rounded, strongly contracted at the sutures, and moderately shouldered at the summit.
The light yellow shell has an ovate shape. The length measures 4.6 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six whorls of the teleoconch are well rounded, moderately contracted at the sutures, appressed at the summit.
The bluish-white shell has an elongate-conic shape. Its length measures 5.3 mm. The whorls of the protoconch are almost completely obliquely immersed in the first of the succeeding turns, above which only the outer edge of the last volution projects. The six whorls of the teleoconch are rather high between the sutures, moderately rounded.
The sides of the spire are concave towards the top, and convex towards the periphery. The shell contains 9 whorls. The white nucleus is nearly smooth, but under a lens, with rows of small pits. The subsequent 4 violet whorls contain 3 spirals, crossed by numerous ribs, beaded where they cross each other, leaving square interspaces.
The length of the shell varies between 10 mm and 20 mm. The discoidal, depressed, smooth, shining shell is covered-perforate. The six whorls, are, under a lens, very minutely, obliquely striate. The earliest whorls are whitish, spirally obsoletely sulcate, the remainder are pale flesh-colored, ornamented with a subsutural linear zone and oblique brown spots.
The interstices are concave, brownish, glossy, and obliquely striated by the lines of growth. Sometimes they show subordinate, revolving, raised lines. The four principal ribs are continued on the upper whorls, but the intermediate ones gradually disappear on the middle whorls. The whitish nodules on the ribs are prominent, rounded and smooth, and extend to near the apex.
The protoconch consists of two flatly convex whorls, which are finely spirally lirate with very distinct oblique growth-lines. The 4 to 5 whorls are slightly convex. The body whorl is large, concave below the suture, obtusely angulate at the periphery and eroded in front of the aperture. The base of the shell is flatly convex.
The prominent protoconch contains two projecting whorls transverse to the axis. The twelve whorls of the teleoconch are very convex. The 16 transverse ribs are often opaque white, very prominent, and slightly oblique. They are separated by very deep, concave, about equally wide spaces, which terminate in clean, square-cut ends, sometimes just above the suture.
Its colour is cinereous, pink, or pinkish-brown, usually with white markings near the suture or tessellated with white. Sometimes a broad dark-brown band encircling the periphery of the whorls, and one on the centre of the base. White zigzagbands are sometimes adorning the last 2 or 3 whorls. The epidermis is thin, slightly shining, easily worn off.
Hemilytoceras is a lytoceratin ammonite genus with round inner whorls, outer whorls becoming depressed and in some developing high lamellae (ribs) that bend forward over the venter. The type species H. immanae came from the Tithonian of Europe. The genus is known from the overall Upper Jurassic of central and southern Europe, North Africa, and western India.
The robust shell has a chocolate brown color. Its length measures 5.2 mm. The whorls of the protoconch are small and deeply obliquely immersed in the first turn of the teleoconch, above which only the tilted edge of the last one projects. The eight whorls of the teleoconch are flattened and moderately shouldered at the summit.
The length of the shell attains 6 mm, its diameter 2 mm. (Original description) The slenderly fusiform shell is pale yellowish brown, blotched here and there with light chestnut. It contains 7 whorls, convex, angled above. The first two are horny, the later whorls sculptured with transverse ridges and fine spiral striae, presenting a finely cancellate appearance.
The white shell has an elongate-conic shape. Its length measures 4.8 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the titled edge of the last volution projects. The six whorls of the teleoconch are well rounded, rather high between the sutures, contracted at the periphery.
Some have a radula with vestigial lateral teeth. Teleoconch whorls are shouldered and nodulose, with the three early whorls axially ribbed. They often have with a black blotch near the siphonal canal and the upper part of the aperture. All species have a shoulder, except in Callipara bullatiana where the well-defined shoulder changes at a slight angle.
When the species was discovered, thirty-eight specimens were collected: the shell shapes showed low variation. The snail shell is high and wide. This is the first snail reported that has a shell which shows four discernible coiling axes. The body whorls of the shell thrice detach and twice reattach to preceding whorls without any support.
The shell grows to a length of 8.5 mm, its diameter 4 mm. (Original description) The small, white shell is solid and nearly smooth. It has a large smooth protoconch of about two whorls and four and a half subsequent whorls. The suture is distinct, not appressed, the fasciole in front of it obscure, not constricted.
The height of the shell attains 1 mm, its diameter 1.7 mm. This thin, white, translucent shell has a discoidal shape and is widely umbilicate. The flat spire consists of 4 whorls, including the 2 narrow, smooth, convex whorls of the slightly raised protoconch. The shell is ornamented with many radial riblets and intercostal spiral striae.
The length of the shell varies between 14 mm and 17 mm. The small, pretty thick shell is elongated and conical. It is formed of six distinct, slightly convex whorls. The surface of the upper whorls appears to be shagreened by very small tubercles, formed by a multitude of very approximate longitudinal folds and transverse striae.
Shell: The cone-shaped shell reaches a height of 35 mm. It is shiny white to cream coloured, often with brown spots. Seven thick and very distinct costae (spiral ribs) wind around twelve to fifteen whorls. These convex whorls often contain two or three purple bands that can best seen when they cross the lamella of the outer lip.
The very regularly elongate-conic shell is subdiaphanous to milk-white. Its length measures 5.6 mm. The whorls of the protoconch are small, deeply obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last turn only is visible. The seven whorls of the teleoconch are slightly rounded, and separated by constricted sutures.
The elongate-conic shell is white. Its length measures 2.5 mm. The two whorls of the protoconch are deeply, obliquely immersed in the first of the succeeding turns. The six whorls of the teleoconch are marked by two strongly elevated tuberculate keels between the sutures, the posterior one of which is about twice as wide as its neighbor.
The large, ovate shell is bluish-white. Its length measures 6.5 mm. The whorls of the protoconch are small, deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are inflated, well rounded and feebly contracted at the sutures.
The elongate-ovate, yellowish-white shell is rather stout. Its length measures 6.3 mm. The whorls of the protoconch are obliquely immersed in the first of the succeeding turns, the outer edge of the last turn only being visible. The six whorls of the teleoconch are well rounded, with a narrow, tabulate shoulder at the summit.
The soiled white shell is elongate-conic. It measures 4.8 mm. The at least two whorls of the protoconch are moderately large, helicoid, one-half obliquely immersed in the first volution of the teleoconch, the periphery projecting slightly beyond the left outline of the spire. The six whorls of teleoconch are well rounded, very slightly shouldered.
The white, ovate-conic shell measures 1.8 mm. The nuclear whorls are moderately large, obliquely deeply immersed in the first post- nuclear whorl, the peripheral portion only of the last volution projects above the edge. The four post-nuclear whorls are moderately rounded, and the shoulders are strongly crenelated. They are marked between the sutures by four spiral keels.
The elongate-ovate shell is milk-white. Its length measures 2.8 mm. nuclear whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six whorls of the teleoconch are well rounded, slightly contracted at the sutures and weakly shouldered at the summits.
The elongate-conic shell is milk-white. It measures 4.3 mm. The whorls of the protoconch number at least two, and are small, smooth, and obliquely half immersed in the first of the succeeding turns. The seven and one-half whorls of the teleoconch are well rounded, moderately contracted at the suture, and well shouldered at the summit.
The pupiform shell is vitreous. The length of the shell reaches 3 mm. The whorls of the protoconch are large, obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The six whorls of the teleoconch are flattened, slightly excurved at the shouldered summit, strongly contracted at the sutures.
The tubercles are connected axially by slender riblets, which extend to the third keel. There are about twenty tubercles on the latter whorls, while on the early whorls they are ill defined. The sutures are deeply channeled. The periphery of the body whorl is marked by a smooth spiral keel, equal to the one posterior to it.
The white shell is elongate-ovate. Its length measures 1.4 mm. The 2 ½ whorls of the protoconch are large and form a depressed helicoid spire, whose axis is at right angles to that of the succeeding turns, in the first of which it is about one-fifth immersed. The three whorls of the teleoconch are well rounded.
The elongate-conic shell is thick and heavy, rough through erosion, yellowish white. Its length measures 9.9 mm. The whorls of the protoconch are decollated in the type, judging from the pit in the apex they are probably deeply, obliquely immersed. The six whorls of the teleoconch are only moderately rounded, somewhat shouldered at the summit (surface decidedly eroded).
The shell is elongate, ovate, and cream-colored. Its length measures 2.4 mm. The whorls of the protoconch number at least two, and are marked with three slender, spiral lirations, the apex being deeply obliquely immersed in the first of the succeeding turns. The junction of the nucleus and the post-nuclear whorls is marked by a varix.
The five whorls of the teleoconch are well rounded. They are marked by three equal and subequally spaced spiral grooves which are crossed by slender axial riblets, the combination of grooves and ribs giving the whorls a pitted appearance. The four raised spaces bounded by the spiral grooves are finely spirally striated. The sutures are deeply channeled.
The generally slender, bluish-white to milk-white, semitranslucent shell is more or less elongated and has a cylindro-conic shape. The apex is sinistral. The reversed, flattened or projecting protoconch consists of 1½ to 3 whorls that are oblique or tilted from transverse to the axis. The teleoconch contains many planulate or more or less convex whorls.
Colour ivory-white. The spire is high, narrow, conical, but with the profile-lines broken by the deep concave curves at the sutures. The apex, the embryonic whorls are small, cylindrical, and bluntly rounded at the top, which is slightly pressed down on one side. The whorls are strongly angulated, with a concave curve between the keels.
The ovate shell is white. Its length measures 3 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are well rounded, feebly contracted at the suture and appressed at the summit.
The white shell is ovate. Its length measures 2.8 mm. The whorls of the protoconch are smooth, deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are somewhat inflated, constricted at the sutures and feebly shouldered at the summits.
The shell is very elongate, ovate, crystalline and transparent. Its length measures 2.3 mm. The whorls of the protoconch are wholly immersed in the first of the succeeding turns, above which only a portion of the bust two project. The four whorls of the teleoconch are well rounded, moderately contracted at the suture, and strongly shouldered at the summit.
Characteristics of this species are: the whorls are divided by a nodose keel into a larger convex upper portion and a smaller channelled lower part. A second series of blunt tubercles adorns the upper edge of the whorls along the suture. Below there are slightly elevated striae. The body whorl has the base sharply separated by a second keel.
The white shell has an ovate shape. Its length measures 3.9 mm. The whorls of the protoconch are obliquely immersed in the first of the succeeding turns above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are slightly rounded, well contracted at the sutures, and moderately shouldered at the summit.
The ovate shell is vitreous, translucent. Its length measures 3.3 mm. The whorls of the protoconch are deeply, very obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The four whorls of the teleoconch are inflated, slightly contracted at the suture, appressed at the summit,.
The slender, white shell has an oval shape and is glossy and transparent. Its length measures 3 mm, of which ⅔ are occupied by the body whorl. The whorls of the protoconch are intorted, somewhat obliquely immersed in the first turn of the teleoconch. The 4½ to 5½ whorls of the teleoconch are slightly convex with a smooth sculpture.
The milk-white shell is elongate-ovate, umbilicated, and measures 6.2 mm. The nuclear whorls are deeply, obliquely immersed in the first of the post-nuclear turns, above which only the tilted edge of the last whorl projects. The six post-nuclear whorls are moderately rounded. They are marked by faint lines of growth, and numerous microscopic spiral striations.
The height of this minute shell attains 0.75 mm and its diameter 0.50 mm. The delicate, white-gray shell has a depressed trochoidal shape and is deeply umbilicate. it contains 4 whorls. The nuclear whorls are slightly nepionic, and shapelessly turgid, but the penultimate and body whorl are very well sculptured and defined, being acutely spirally bicarinate.
The whorls are usually widely separated, but some individuals display whorls that are just barely touching each other. The ribbing becomes denser than in the first growth stage and its cross-section is more or less circular. The third growth stage is that of the adult. It is composed of a single distinctive upward-facing U-shaped whorl.
The length of the fusiform shell attains 10 mm, its diameter 3.75 mm. It contains 10½ whorls, of which 1½ in the protoconch. This species is conspicuous for its exactly continuous longitudinal ribs, those of whorl succeeding whorl descending in a perfectly straight line to the base. These whorls are slightly once-angled beyond the centre.
The length of the shell attains 16 mm, its diameter 5 mm. The solid, elongate, subturreted shell contains 9-10 whorls. This species is remarkable for having the first two whorls large, and not smooth and glassy as in most other species in this genus, but finely ribbed and lirated. The shell has a golden color.
The length of the shell attains 13 mm, its diameter 4 mm. A most graceful white fusiform species, resembling a mitra of the genus Cancilla. It contains nine whorls of which three straw-colored in the protoconch. On the fourth and fifth whorls the longitudinal ribs are fewer and more incrassate than on the penultimate and body whorl.
The colour is white. The whorls show close revolving cords, sometimes decussated with radial riblets. No varix. The outer lip is thin.
The length of this broken shell may have been 12 mm long. The holotype consists of the protoconch and two subsequent whorls.
The size of the shell varies between 6 mm and 15 mm. The shell contains, besides the smooth protoconch, 3½ rounded whorls.
Olivella floralia is found in the Caribbean with a slender, white shell with upper whorls that are white to blue or purple.
The spire is gradate. The whorls are subbicarinate, smooth and flat. The aperture is subquadrangular. The open umbilicus has a smooth texture.
The shell has a depressed-conical shape. It is widely umbilicate. The convex whorls are concentrically granose-lirate. The sutures are canaliculate.
The spire is conoidal. It contains about six convex whorls. The large body whorl is depressed-globose. The outer lip is simple.
The spire is rather prominent. The rounded whorls are costate. The subcircular aperture is pearly within.G.W. Tryon (1890), Manual of Conchology vol.
The shell is turreted, slender. The shell has 6 whorls. The shell is chalky white in color. The suture is deeply impressed.
The spire has six or seven whorls. The opening is oval and the peristome is simple.Little pronounced umbilical slot.Operculum thin and smooth.
The revolving lines are broken up into minute dots The form is somewhat narrower. Some of the spire whorls are finely beaded.
The length of the shell attains 23 mm, its diameter 10 mm. (Original description) The small, thin, polished shell has a pointed simisigera protoconch of 3½ whorls and six subsequent whorls. The protoconch is bright yellow-brown, often caducous, leaving the white internal callus to represent it, which being molded on the interior of the protoconch whorls, is polished and smooth, while the original protoconch has an oblique reticular curved sculpture. The sculpture is much like that of Spergo glandiniformis, but having the whorls appressed at the suture lower on the antecedent whorl, the riblets more prominent, less oblique, and higher on the whorl, the fasciole more deeply impressed and its sculpture indicating a deeper sinus, and the fine spiral grooving continuous and uniform over the whole surface of the shell.
The length of the shell attains 9.5 mm, its diameter 3.5 mm. (Original description) The waxen white shell has a vitreous white smooth rounded protoconch of nearly two whorls and eight subsequent sculptured whorls. The spiral sculpture consists of an undulated more or less nodulous narrow band in front of the suture, separated by the fasciole from an angulation, which in the upper whorls is peripheral, and on the body whorl forms a well marked shoulder. In front of this on the upper whorls are one to three, and on the body whorl between the angle and the anterior end of the siphonal canal about a dozen, small sharply elevated threads with much wider interspaces, threads which are, where they intersect the transverse ridges, modified by small sharp nodulations.
The length of the shell attains 11 mm, its diameter 4.5 mm. (Original description) The small, brownish shell has an acute brown protoconch of 4½ regularly increasing whorls (apparently smooth but slightly eroded), changed abruptly into the sculpture of the five subsequent whorls. The axial sculpture consists of (on the body whorl 10) low rounded ribs with wider interspaces, obsolete on the base and the incremental sculpture indicated by the rather distant sharp striae. The spiral sculpture consists of (on the spire two, on the body whorl three) rather prominent nodules on the ribs with no conspicuous cord in the corresponding part of the interspaces; otherwise the spiral sculpture, especially on the latter whorls, comprises sharp narrow grooves with wider flattened interspaces which become more cordlike on the earlier whorls and the base.
The apex is smooth and vitreous. The subsequent whorls are inflated and decussate. The longitudinals are oblique and tenuous. The aperture is oblong.
The shell contains 8 whorls, slightly rounded. The suture is deepand smooth. The spire is acuminated. The apex is acute, brown and granulated.
The shell of these snails is shaped like a discus, or a lens, with a sharp edge around the periphery of the whorls.
The shell of these snails is shaped like a discus, or a lens, with a sharp edge around the periphery of the whorls.
The shell of these snails is shaped like a discus, or a lens, with a noticeable "edge" around the periphery of the whorls.
The shell has 5-6 whorls. The width of the shell is 35–45 mm.Auffenberg A. & Stange L. A. (1993). Entomology Circular 356.
The small shell is, subcylindrical. It contains few whorls. The base is concave. The sculpture consists of radial ribs latticed by spiral cords.
The very early whorls of Morrowites are smooth except for distantly placed ribs and constrictions, those of Mammites have normal ribs and tubercles.
The suture is impressed. The shell contains four whorls. The white apex is smooth. The last whorl is rapidly enlarging, subangular at periphery.
The height of the shell attains 25 mm. The small, conical shell is variegated. The nucleus is rosaceous. The six whorls are planate.
The species was first described by William Swainson as Mitra sulcata. The shell is marked by very distinct ridges aligned with the whorls.
The oral disc has several whorls of long brownish translucent tentacles with paler bases surrounding the mouth.Hermit crab anemone Retrieved 2011-09-10.
The subdiscoidal shell is umbilicate. The spire is depressed. The whorls are rounded and the body whorl is descending. The aperture is circular.
The interstices are quite smooth. The colour of the shell is light yellowish-brown. The spire is raised. The shell contains 6 whorls.
The solid, white shell is rimate. it is subpellucid, smooth, and shining, white. The four whorls are convex. The thick outer lip simple.
The diameter of the nearly planispiral shell varies between 8 mm and 10 mm. The shell contains 3½ whorls with blunt double spines.
Prominent lateral ribs, at least on inner whorls. Grow lines show a distinct hyponomic sinus. Sutures have lateral lobes. The siphuncle is subcentral.
Adult shell size varies between 48 mm and 154 mm. The ovate, conical shell is whitish, ashy or reddish, often with two brown bands which are sometimes interrupted. The spire is formed of seven or eight distinct whorls, flattened above, furnished with longitudinal, almost perpendicular folds, which are themselves intersected by striae visible only in the interstices of the folds, except towards the base, and upon the whorls at the top of the spire. The upper edge of the whorls is flattened, and bordered by rounded tubercles, which are separated from the longitudinal folds by a deep stria running below them.
The subsequent whorls are subangular, concave in their upper part and separated by a conspicuous waved suture. The sculpture consists of a row of tubercles at the periphery, sharper in upper whorls, more obtuse lower on, a row of granules, just below the suture, becoming scarcely visible in last whorl and entirely or nearly wanting in some specimens. The lower part of the whorls show one or two rather faint, spiral lirae. The part of the last whorl below the keel shows more or less conspicuous spirals, which vary from regular flat lirae to more irregular riblike ones.
The subsequent whorls are angular, excavated above, separated by a conspicuous, irregularly waved suture, with a rather strong rib just below it, with short bead-like folds. The lower part of whorls shows oblique ribs, 15 in number on the body whorl, tubercled at their upper part below the excavation. Moreover, the basal part of whorls is crossed by faint spirals, 2 in number on the penultimate whorl, about 10 in a slightly contracted body whorl, of which latter the upper ones are more conspicuous, bead-like in crossing the ribs. Those on the siphonal canal are plain.
The smaller specimen of four whorls is destitute of spiral lines, either raised or incised, but the larger one of five whorls has about fifteen very faint incised spiral lines on the body whorl commencing well below the shoulder and are so shallow as to scarcely interrupt the otherwise smooth surface. There are also occasional faint indications of one or two spirals just above the suture on the preceding whorl. The one 1½ whorls of the protoconch are well rounded and apparently smooth (this may be due to erosion) and regularly coiled. The epidermal layer has a delicate yellow tint.
The length of the shell attains 20 mm, its diameter 6¼ mm. (Original description) The fusiform, rather solid shell is uniformly red-brown, lighther behind peristome and at the sutural sinus, and with orange base. It contains 6 whorls, (the apex is broken-, the number of whorls may have been at least 10) rather convex, slightly excavated below the conspicuous suture, which is accompanied by an inconspicuous infrasutural thread. The sculpture consists of somewhat oblique ribs, nearly crossing the entire whorl in the upper ones, but becoming obsolete in the infrasutural depression of the lower whorls.
The length of the shell varies between 15 mm and 25 mm. (Original description) The robustly fusiform shell is whitish or yellowish white, stained with brown beneath the suture, and obscurely banded with the same colour about the middle of the body whorl, spotted and dotted with a lighter tint irregularly over the rest of the surface, but leaving a plain white zone at the angulation of the whorls and a second just above the median brown one on the body whorl. The apex is white. The shell contains 8½ whorls of which 1½ smooth, globose whorls in the protoconch.
The axial sculpture consists of (on the body whorl about 14) narrow, oblique ribs with wider interspaces, crossing the whorls, stronger on the earlier whorls, and ending in small close beadlike pustules in front of the suture. These ribs become obsolete on the base. The spiral sculpture consists of a single carina near the periphery of the whorls, prominent where it intersects the ribs, and 10 or 12 fine threads in front of the carina which slightly cut the ribs in crossing them. The anal fasciole is wide, extending from the carina to the coronation of the suture.
The shell grows to a length of 10 mm; its diameter 3 mm. (Original description) The sculpture of the shell much resembles Globidrillia smirna (Dall, 1881), especially on the older whorls which differ from those of G. smirna in the following particulars : the protoconch is a rich, dark, shining brown.he nodules have more extended bases, and want the white tips. The color of the whorls is more clearly translucent, wanting the pinkish tinge and the white sutural line; the whorls increase more rapidly in size, and are strongly appressed against their predecessors, thus making the line of the suture irregular.
The shell is covered with a large number of spiral lirae, often with intermediate ones, the number of lirae being about 7 on the penultimate whorl, but amount with the intermediate ones to 15 or 16. They are crossed by numerous riblike striae, producing short spines on the points of intersection, and very fine lines of growth. On the upper whorls the lirae diminish in number, they become nearly obsolete on the uppermore whorls, and disappear at last, leaving only the concentric ribs. The suture is deep, especially between the penultimate and ultimate whorls, on this last the suture descends conspicuously.
The shell is bone white to yellow cream in color with an elevated spire, a waxy appearance and texture, a very distinct suture, and a weakly curved, fairly short, slender siphonal canal. The shell has two nuclear whorls (which are typically eroded) and five to six subsequent whorls. The whorls bear 10 wide blade like varices which are prominent at the shoulder, where they rise into blunt rounded tips that curve backwards from the aperture of the shell. The surface texture of the shell appears smooth and waxy, however under magnification microsculpture is visible consisting of minute striations both spirally and longitudinally.
They are provided with decidedly sinuous, strong, protractively slanting, almost sublamellar, axial ribs, of which 14 occur upon the first three and 12 upon the remaining whorls. These ribs are about one-third as wide as the spaces which separate them. In addition to the ribs, the whorls are marked by narrow, deeply incised, spiral sulci, which are about one-third as wide as the flat spaces that separate them. The increase in these sulci from the early whorls to the later takes place by the intercalation of new sulci in the flat spaces, which usually begin as fine incised striations.
The sinus is broadly rounded and median in position on the spire whorls. The columella is simple. The type of this genus is PIeurotoma silicata, of Aldrich, a very remarkable and isolated species occurring in the Lignitic Eocene of the Gregg's Landing beds of Alabama. The beaded subsutural collar, subjacent depression and swollen and finely ribbed lower parts of the two whorls immediately below the protoconch are lost completely on the larger whorls, though the subsutural collar can be feebly traced as a slightly tumid line gradually descending further below the suture with the growth of the shell.
The 11 whorls of the teleoconch are well rounded, and slightly shouldered at the summit. They are marked by very strong, sublamellar, protractive axial ribs, of which 14 occur upon the second and third, 16 upon the fourth to eighth, 18 upon the ninth and tenth, 20 upon the eleventh, 24 upon the twelfth, and 25 upon the penultimate turn. On the early whorls these ribs are very strong in the middle, bending suddenly toward the summit, which gives them a decidedly angulated appearance a little below their termination. On the last three whorls they are more closely crowded and less strongly developed.
In H. riniensis the laterals divide at about one-half of their length into smaller whorls each of which bears six oogonia and the internodes are uncorticated, and about 0.3 mm in diameter. The nodes bear whorls, about 8 mm in diameter, that consist of six radial laterals. Each lateral divides at about one-half of its length to give rise to a secondary hexaradial whorl each branchlet of which carries an oogonium. H. riniensis has a very small oogonia attached to the ends of branchlets of secondary whorls and surrounded by extremely fine hair-like tertiary branchlets.
They are marked by a strongly incised spiral line a little distance below the summit, and three feeble ones of which one is at the periphery, the other two dividing the space between those two into three equal areas. These lines, excepting the one near the summit, which is strong throughout, are best developed on the early whorls. In addition to the spiral sculpture, the whorls are marked between the sutures by strong lines of growth and indications of feeble axial ribs which tend to render the early whorls somewhat nodulous. The sutures are strongly impressed.
Below the shoulder, the whorls are abruptly flattened. The subsutural band is usually little convex, or nearly flat. The ribs are numerous (often 20 to 25) regular, nearly straight below the shoulder, but rounded, separated by concave intervals of equal or greater width.;They extend entirely across the upper whorls, but fade out below the middle of the body whorl.
Spirals—about ⅔ down each whorl is a very sharp and prominent angulation. The keel thus formed is beset by numerous small, sharpish, narrow and elongated tubercles, which fail to become ribs. Of these tubercles there are about 12 on the earlier whorls, and they become more numerous on the succeeding whorls. Below this keel there is a straight-lined contraction.
The shell can grow to a length of . It is fusiform and fairly thick, with a spire angle of 40-42°. The protoconch has one and a half smooth, conical whorls, while the teleoconch has eight whorls which are moderately convex. Each whorl has three elaborately sculptured varices (thickened protruding ridges) with nine to twelve fluted cords extending onto the varices.
The length of the shell attains 9 mm, its diameter 5 mm. (Original description) The white, translucent shell is of moderate size, stout-fusiform, with swollen, angulated whorls, and a distinctly turreted, rapidly tapering spire. The sculpture consists of rather distant ribs and much finer spiral cinguli. The largest specimen, which is probably immature, has four whorls below the protoconch.
The length of the shell attains 5 mm, its diameter 2 mm. (Original description) The minute shell is pale brownish, or whitish with obscure brownish spiral bands. It has a minute trochoid protoconch of three whorls the earlier smooth, the last axially minutely closely ribbed, followed by five subsequent whorls. The suture is distinct, hardly appressed, the whorl sloping steeply away from it.
The length of the shell attains 16¾ mm, its diameter 6½ mm. (Original description) The thin, fusiform shell is transparently white. It contains about 9 whorls of which about 3 form a reddish-brown protoconch, with crossed riblets. The subsequent whorls are angular, the upper part excavated, with remote, faint, axial plicae below the suture, nearly lacking in the body whorl.
The protoconch is a little oblique to the axis, of 1½ smooth whorls, the nucleus globose. The 6 whorls of the spire are convex, attenuated toward the base; the last high and somewhat ventricose. The suture is not deep, undulating, bimarginate. The aperture is slightly oblique, high and narrow, angled above, with a rudimentary broad siphonal canal below, its base truncated.
The apical whorls (in a worn state) are reticulate, and the residue of the shell is sculptured with longitudinal ribs, which fade out on the lower half of the whorls. There are also numerous rounded spirals cutting the ribs. Below the suture there is an excavated area, showing spirals and also arcuate striae, more numerous than the ribs. The columella is fairly straight.
The length of the shell varies between 5 mm and 11 mm. The minute, whitish or pale brownish shell is subcylindrical and turreted. The protoconch has a projecting minute subglobular apex and contains about 1½ smooth whorls followed in the teleoconch by about 4½ sculptured whorls. The spiral sculpture consists of minute close-set threads covering uniformly the whole surface.
The height of the shell attains 5 mm, its diameter 2 mm. (Original description) The small, stout shell is blunt. Its color is white, with a brown peripheral band and another one on the base. The protoconch is small, blunt, at first smooth and then spirally striated, in all about 2 whorls followed in the teleoconch by five subsequent whorls.
The size of the shell varies between 25 mm and 42 mm. (Original description) The shell has a fusiform shape. The whorls are marked by a narrow, obscurely nodulous spiral keel at the summit, which is followed by a depressed spiral sulcus that equals the keel in width. The two comprise the posterior two-fifths of the whorls between the sutures.
The nuclear whorls are decollated. The post-nuclear whorls are moderately rounded, constricted at the sinus, which causes the summit of the turns to appear as a cord. The space between the sutures is variously mottled with flesh color and chestnut spots and streaks. The base, beginning at the periphery, is rose colored, a little paler on the columella than the rest.
The oblong shell is ovate The whorls are compressedly gibbous, forming a round shoulder, constricted and with revolving striae towards the base. Otherwise, the shell is smooth, except that the upper whorls of the spire are slightly longitudinally plicate. The color of the shell is whitish, under a very thin, smooth, yellowish brown epidermis. The inside of the aperture is often yellowish brown.
Euomphalus is characterized by a closely coiled shell with a depressed to slightly elevated spire and a channel-bearing angulation (a selenizone) on the upper surface of the whorls. The lower surface of the whorls is rounded to angular. Amphiscapha, Philoxene, and Straparollus are among similar related genera. Serpulospira, also related, differs in having a broadly open spiral in the adult form.
The length of the shell attains 50 mm, its diameter 35 mm. The fusiform and turreted shell contains 12 whorls. These are excavated above, carinated and angulated in the middle and below the angle obliquely plicated. The upper half of each whorl is nearly smooth, as the plications extend scarcely beyond the central large spiral liration which marks the angulation of the whorls.
The length of the shell attains 15 mm. (Original description) The short, stout shell has a smooth rounded whitish inflated protoconch of two whorls and eight subsequent whorls. The color of the shell is whitish or pale madder brown. The spiral sculpture consists of obsolete spiral striae, generally a little wavy, and often absent from a part or the whole of the shell.
The length of the shell attains 8.3 mm, its diameter 4 mm. The small, dark-red shell contains six convex whorls and, contrary to the other species in this genus, the apex is not papilliform but slightly depressed. The shell has 10 axial ribs on the whorls. The body whorl has only 6 or 7 ribs, the last part without ribs.
The length of the long, narrow shell varies between . Its shape is conical with a striated, turriculate spire with 13 to 15 whorls. The paucispiral protoconch contains about two whorls. The teleoconch contains about 5 to 9 spiral grooves on the sutural ramps and 25 to 30 small beadlike nodules on subsutural ridge ar about two-thirds from the top.
The length of the shell attains 8.5 mm, its diameter 4 mm. (Original description) The shell is fragile, short and has a biconic shape. The brown protoconch consists of 4½ whorls, the apical 1½ with close spiral lirae, punctate between, the rest latticed by the crossing of two sets of crowded oblique lirae. The whorls are convex with deep sutures.
The second and fourth diminish as they ascend, and vanish in a thread two whorls above. The keel forming the basal angle just emerges above the suture on the upper whorls. Close set perpendicular riblets bead the keels at the point of intersection, and their interstices are again traversed by smaller spiral threads. On the snout are half-a-dozen spirals.
The protoconch contains two , homostrophe, convex whorls with 20 fine spiral incisions ending abruptly in a varix. The spire whorls show angulation at one-fourth the distance from the lower suture. They are uniformly concave between the angulations. Their sculpture shows axial ribs, valid, rounded nearly as wide as the interspaces, and spiral lirae, wider anteriorly, wider than their interspaces, crossing the ribs.
The apex is exserted. The whorls of the spire are sloping, nearly straight, gradated, angled at junction of posterior and middle fourth. Behind this the whorl is bevelled to the suture, which is distinct and impressed. The whorls are sculptured with spiral lirae, four to six in front of the angle, two behind it, flatly rounded, equidistant, wider than the interspaces.
The length of the shell attains 10 mm, its diameter 3 mm. A very delicate flesh-coloured shining shell with oblong aperture and produced siphonal canal. This attenuate-fusiform shell contains 7 whorls, including two decussated and alveolate apical whorls. They are much impressed at the sutures, longitudinally few-ribbed, there are but seven on the body whorl, and spirally obscurely lirate.
The length of the shell attains 6 mm, its diameter 3.75 mm. (Original description) The small shell has a columbelliform shape. It is white, spirally banded with bright yellow, centrally on the upper whorls, and twice, at the periphery and towards the base, of the body whorl. The shell contains 6 whorls, in our specimens imperfect as regards the protoconch.
The protoconch consists of two globose embryonic whorls, of which the first is immersed, but scarcely flattened down on one side. They are rather remotely microscopically regularly striated. The shell contains whorls. They are short, broad, of slow increase, with a rather long sloping shoulder and a sharp carinated angle, below which they are cylindrical, with a very slight contraction to the suture.
The length of the shell attains 23 mm, its diameter 11 mm. The white ovately fusiform shell contains 10 whorls. In some of the upper whorls the upper margin just beneath the suture is also more or less nodose. The tubercles just above the suture are crossed by two or three sulci, so that each of them is tripartite or quadripartite.
The length of the shell attains 5.2 mm, its diameter 3.3 mm. (Original description) The small, biconic, white shell has a brown rounded sinusigera protoconch consisting of three whorls, followed by three subsequent whorls. The suture is appressed, minutely crenulated by the ends of the axial sculpture in front of it. The anal sulcus is wide and only moderately deep.
The three whorls of the protoconch are seen with a lens to be very finely cancellate. The species is remarkable for its acutely angled ridge surmounting the upper portion of the whorls of the spire. The longitudinal ribs (14 on the body whorl) and spiral lirae are extremely pronounced, the interstices being squarely and deeply cut. The siphonal canal is wide and open.
The specimen is somewhat eroded on the upper whorls, with indications of a shoulder or carina on the three whorls following the protoconch. The suture is slightly irregular, appressed, distinct, not channeled . The spiral sculpture consists of fine threads, alternately larger and smaller, pretty uniform over the whole surface, with narrower interspaces. This sculpture is fainter on the sutural side of the fasciole.
The length of the shell attains 73 mm, its diameter 30 mm. (Original description) The large, fusiform shell is of a rich reddish brown. It is deepest on the columella, with a closely adherent, very thin, polished epidermis. The shell contains seven whorls, without the protoconch, which is lost in the specimen, while the outer coat of the apical whorls is much eroded.
The transverse ribs, commencing at the shoulder, are prominently raised, rather oblique, and extend entirely across the whorls of the spire, becoming smaller next the suture. On the body whorl they extend to the base of the siphonal canal. They are obtuse at summit and separated by wider, deeply concave interspaces. On the last whorls there are about sixteen ribs.
The length of the shell attains 8.4 mm, its diameter 3.6 mm. The minute shell has a pale buff color with a brown Sinusigera protoconch of three whorls and four subsequent well rounded whorls. The suture is appressed with a fine thread in front of it;.0 The anal sulcus is wide and shallow, leaving a wide fasciole, arcuately striated behind it.
The size of an adult shell varies between 15 mm and 30 mm. The elongate, ovate-fusiform shell has a buff color. It differs from Typhlodaphne purissima (Strebel, 1908) by being slender, having a smaller protoconch (1½ whorls) and showing flexuous, closely spaced, subobsolete axials (numbering 18 to 24) over the 5 whorls of the teleoconch. The shoulder is slightly concave.
Numerous fine, unequal, raised, spiral lines cover the whole surface, except the subsutural band. The upper whorls are also crossed by sixteen to eighteen blunt, transverse ribs, about as broad as their interspaces, most elevated on the middle of the whorls, fading out above and below. The aperture is elongated and narrow. The sinus is broad and well marked, just below the suture.
The conical spire is high and narrow. The 2½ embryonic whorls of the protoconch are cylindrical, quite smooth, and have the extreme point very much flattened down on one side so as to make a perfectly rounded tip. The shell contains 11½ whorls in all. They are rather short, and of very regular increase, slightly convex, but not contracted either above or below.
The suture is distinct, not appressed. The anal fasciole is adjacent to it with no thickened cord between. The whorls are well rounded but the fasciole is flattish. The spiral sculpture consists of (on the early whorls two, on the body whorl about 15) sharply incised lines in front of the shoulder cutting the ribs into squarish segments which are hardly nodulous.
The 5½ whorls are slightly convex, especially the body whorl. The nucleus is smooth and shining. The sculpture consists on the upper whorls of rather distant, radiating ribs, crossed about halfway by a spiral rib or keel, forming small, sharp tubercles where they cross each other. On the third whorl, another series of tubercles appears, at some distance from the deep suture.
The ovate shell is elongated, slightly turreted and pointed at the summit. The spire is composed of seven very convex rounded whorls, united by a shallow suture. Upon the whorls are regularly disposed longitudinal ribs or folds, crossed by numerous, fine, approximate striae, which, by their mutual intersection, cover the surface of the shell. The white aperture is slightly rounded.
The size of the shell varies between 25 mm and 45 mm. The ovate, conical shell is smooth and reddish brown. The spire is composed of six whorls, whose length slightly exceeds that of the aperture. The whorls of the spire are convex, bent obliquely at the suture, and marked in that part by slightly projecting and distant longitudinal folds.
The height of the shell attains 11 mm. The thin and slightly nacreous, imperforate shell has an ovate shape. The shell contains seven whorls, the first wound horizontally, thus giving the spire a decapitated aspect. The median whorls are separated by a channeled suture, flattened on the shoulder and subangled at the periphery, the last slightly descending behind the aperture.
The length of the shell varies between 15 mm and 30 mm. (Original description) The solid shell is marbled with brown and white, the brown chiefly as a broad dark peripheral band with a narrower band just behind the siphonal canal. The protoconch is blunt, brown and consists of two smooth whorls. These are followed by about six subsequent whorls.
The small, almost translucent shell has an elongate-conic shape. Its length measures 3.7 mm. The whorls of the protoconch are small, very obliquely immersed in the first of the succeeding turns, above which the rounded, tilted edge of the last volution only projects. The six whorls of the teleoconch are high between the sutures, slightly rounded, and feebly shouldered at the summit.
The shell usually has six whorls, the large first one occupying half the length of the snail. The color varies from slaty- brown through reddish brown to orange, dull yellow and off white. The smaller whorls have white spots near their edges and also some darker streaks which fuse together on the largest whorl.Littorina angulifera: Mangrove periwinkle Smithsonian Marine Station.
The light yellow horn-colored shell has an elongate conic shape. Its length measures 4.8 mm. The 2½ whorls of the protoconch are well rounded. They form a decidedly depressed helicoid spire, the axis of which is at right angles to that of the succeeding whorls, in the first of which the tilted edge of the nucleus is about one-fifth immersed.
Juvenile The length of the shell varies between 2.6 mm and 4 mm. The whorls of the protoconch are about one-third buried. The teleoconch contains nine whorls. The small axial bars are a little more pronounced and only four basal keels are present, the first one anterior to the periphery bein extremely wide, fully double the width of the next.
The whorls of the teleoconch are sculptured similarly throughout. Varices are absent. The shell is marked with strong axial ribs which extend from the summit to the umbilical area The spiral markings consist of impressed lines. The fine, incised spiral striations are subequally spaced and present at the intercostal spaces between the sutures and on the base of the whorls.
The pointed spire is composed of from ten to twelve distinct, smooth, slightly convex whorls. The body whorl is more inflated than the other whorls. The shell is smooth and umbilicated. The ovate aperture is subrotund at its base, and generally marked within, with very prominent ridges continued upon some specimens even to the edge of the sharp outer lip.
The protoconch whorls are deep chestnut-brown, very minutely reticulated by oblique lines running in two directions. The whorls are regularly convex, the apical ones minute and a little prominent, so that the apex is acute. The color of the shell below the brown protoconch is translucent bluish white, with a somewhat glossy surface; when dead, yellowish white.Verrill A. E. (1885).
The early ones are marked by a moderate number of strongly incised lines, while on the later whorls the incised spiral lines are finer and much more numerous. In addition to the spiral sculpture the whorls are marked by decidedly retractively slanting, incremental lines. The suture is moderately constricted. The periphery of the body whorl is inflated, and feebly angulated.
The small shell has an elongate-conic shape. Its length measures 2.5 mm. The whorls of the protoconch are small, smooth, and strongly obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are moderately rounded, strongly contracted at the sutures, and slopingly shouldered at the summit.
These are sculptured with longitudinal, close, radiating lamellae, angular in the middle, and little, elevated, transverse lines. The base of the shell is ornamented with concentric elevated lirae. This species is elevately turbinate, with two conspicuous carinate whorls and a deep perspective umbilicus. The fine lamellae of the upper part of the whorls are bent or angulated in the middle.
The shell contains 7 whorls, of which three smooth conical whorls in the protoconch. The rest are strongly convex with a shallow suture. The 7 axial ribs (9-10 on the penultimate whorl) are high, strong and compressed and are narrower than the intervals, not becoming weak below suture. The ribs are crossed by fine, flattened lirae (12 on the penultimate whorl).
The length of the shell attains 8½ mm, its diameter 2½ mm. (Original description) The shell is elongately fusiform, strong and reddish brown. It contains 7 whorls, of which about 1⅓ form a smooth protoconch. The remaining whorls are moderately convex with a strong liration below the suture and from 3 to 4 lirae on their lower part, 11 on the body whorl.
The sutures are impressed. Sculpture: the flat sutural shelf of the upper whorls is ornamented by fine regular radial riblets. Obliquely descending the slope, these riblets crenulate the upper spirals and gradually vanish on the body whorl into faint irregularly spaced growth lines. On the upper whorls are five spiral cords, between which are smaller threads, in their turn separating still finer lines.
The five whorls have a height of 16 mm and a maximum diameter 5.75 mm. The small, slender shell is elongate. It contains more than 6 flattish whorls (specimen decollate). The suture is distinct, separated from the fasciole in front by an elevated spiral ridge, carinated and beveled from the carina to the suture which is slightly undulated by the ribs.
The height of the shell attains 6½ mm, its diameter 7 mm. The small, narrowly perforated shell has a conoidal shape with five whorls. The first is whitish-rosy, the following white, with reddish flammules and spots of green and bluish, especially at the ridges. The surface of the whorls is marked with very fine spiral and vertical striae, and 2 elevated carinae.

No results under this filter, show 1000 sentences.

Copyright © 2024 RandomSentenceGen.com All rights reserved.