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Clionella
''Clionella'' is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae. Description 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 spire of the shell is elevated. The body whorl is truncated. The siphonal canal is scarcely indicated at the broad base of the aperture. The anal sinus is very shallow. The lip has a small infrasutural anal sinus with no distinct parietal tubercle. The operculum has a lateral nucleus. The foot is short, broad, and rounded behind. The eyes are located near the tip of the tentacles. Radula formula (1-1-1), Distribution This marine genus mainly occurs off South Africa. Species Species within the genus ''Clionella'' include: * ''Clionella aglaophanes'' (Watson, 1882) * ''Clionel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Rosaria
''Clionella rosaria'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. The forma ''Clionella rosaria'' f. ''kowiensis'' (Turton, 1932) is accepted as ''Clionella rosaria'' (Reeve, 1846) Description The size of an adult shell varies between 15 mm and 23 mm. The shell is shortly subulate, truncated at the base. The whorls are plaited and smooth. The aperture is short. The color of the shell is bright scarlet-rose, the uppermost part of the whorls is white-zoned. The shell has an elongate-conic shape. 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 whorls are marked with strong, protractive, axial ribs, which are about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Sinuata
''Clionella sinuata'', common name the ribbed turrid, is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Fossils of this species have been reported from Pleistocene localities on the west coast of South Africa. Description The size of an adult shell varies between 30 mm and 45 mm. The shell is variable in shape. The spire varies from high to relatively low. The whorls are not distinctly concave and have a narrow channel above. The subsutural cord is somewhat impressed. The axial ribs are going from strong (numbering 18-25 per whorl) to almost obsolete. The periphery contains a row of small nodules produced by the anal sinus, terminating short, low, flexuous plicate ribs. The spiral striae are not very distinct. The color of the shell is a pale rusty brown to brownish orange, under a blackish brown epidermis. Distribution This marine species occurs off the west coast of Namibia and South Africa South Africa, officially the Repub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Semicostata
''Clionella semicostata'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 15 mm and 32 mm. The whorls are with shallow channel above. The shoulder angle is situated above or at the middle of the whorl. The body whorl has an obconical shape. The yellowish-brown to dark brown periphery of the shell is nodulous by the terminations of short, oblique, rather distant axial ribs (numbering 12-14). The spiral striae are faint to distinct. The anal sinus is broad. The color of the shell is a uniform light yellowish brown. George Washington Tryon, Manual of Conchology vol. VI p. 233; 1884 Distribution This marine species occurs from False Bay False Bay (Afrikaans ''Valsbaai'') is a body of water in the Atlantic Ocean between the mountainous Cape Peninsula and the Hottentots Holland Mountains in the extreme south-west of South Africa. The mouth of the bay faces south and is demarcat ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Bornii
''Clionella bornii'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 25 mm and 40 mm. (Freely translated from the original Latin description) The whitish shell is elongated and subturrited. The shell contains about 8 rather flat whorls (the apex is lacking). Just below the suture it shows a bipartite girdle. The space between the longitudinal ribs has a red color These interstices are as long as the ribs. The oblique ribs are numerous and increase from 11–12 on the early whorls to 18 on the body whorl, extending almost to the siphonal canal. The spiral striae show obsolete grooves and are best seen on the early whorls. The oval aperture has a length of about the length of the shell. The aperture narrows to a slender point at its top. The very short siphonal canal is slightly curved to the left. The columella is slightly curved in the middle and almost twisted. The outer lip is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Kraussii
''Clionella kraussii'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. This species was named after Ferdinand Krauss (1812–1890), author oKrauss (1848), Die südafrikanischen Mollusken, ein Beitrag zur Kenntniss der Mollusken des Kap- und Natallandes und zur geographischen Verbreitung derselben, mit Beschreibung und Abbildung der neuen Arten; Stuttgart, Ebner & Seubert, 1848. Description The size of an adult shell varies between 15 mm and 40 mm. This species is easily recognized by the short subnodulous ribs, which occupy scarcely the lower half of the whorls, the depression round the middle and the raised band above, and the manner of coloration, the purplish-brown maculations being somewhat flexuous in the depression. Its nearest relation is ''Clionella semicostata'' (Kiener, 1840).Smith, E.A. (1877)"Diagnoses of new Species of Pleurotomidae in the British Museum" ''The Annals and Magazine of Natural History: Including Zoology, B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Subcontracta
''Clionella subcontracta'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description 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 suboval aperture measures about ⅓ the total length of the shell. The body whorl is well rounded at the middle and then contracted below. The almost straight axial ribs number 13–16 per whorl. A spiral striation or groove at the periphery, which also winds up the spire just above the suture, is usually more strongly marked than the rest. The siphonal canal is not notched. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Halistrepta
''Clionella halistrepta'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description 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 anterior three-fifths are marked by strong, broad, low, rounded, slightly protractive axial ribs, which are strongest at their junction with the sulcus, beyond which they scarcely extend. The type has lost the early whorls; upon the first of those remaining there are 10 and upon the rest, 12 ribs. Intercostal spaces are about one-half as wide as the ribs. On account of the closely appressed summits, the sutures are poorly defined. The base of the body whorl is moderately long, marked by the continuations of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Costata
''Clionella costata'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description (Original description) The shell has a fusiform shape and is longitudinally ribbed. There is a deep sinus at the top of the outer lip. The base is contracted. The siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ... is wide. The figure of the type, produced by Swainson, shows a shell with a tapering base, unlike any other species of ''Clionella''.Kilburn RN (1985), Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 2. Subfamily Clavatulinae; Annals of the Natal Museum, 1985 Distribution References External links * costata Gastropods described in 1840 {{clavatulidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Confusa
''Clionella confusa'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The shell grows to a length of 40 mm. (Original description) The elongate shell has a uniform bright red or yellowish colour. It contains 10 ? whorls ( apex broken away). These are rather flat, constricted at the upper part, leaving a rounded girdle beneath the suture, with about 14 slightly oblique costa) below the constriction, by which they are interrupted, so that they are only faintly indicated upon the cingulum above. The ribs upon the body whorl are attenuated anteriorly, but disappear upon the snout. The suture is a little oblique and wavy. The aperture is more or less rosaceous within. The columella is curved, covered with a thin whitish callus. The outer lip is distinctly but not deeply notched at the constriction. This species has been confounded with ''Clionella rosaria'' (Reeve, 1846) because of its bright red colour. Reeve's species, how ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Aglaophanes
''Clionella aglaophanes'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The shell grows to a length of 7.6 mm. (Original description) The shell is high, narrow, conically cylindrical, with a blunt, flatly rounded apex, a short conical base, and scarcely any snout. It is hardly angulated, ribbed, contracted in the sinus area, but barely so at the suture. Its colour is grey, with a silvery sheen. The longitudinal sculpture shows the whorls crossed from suture to suture by low, sharpish, subangulately projecting, dextrally convex, hardly oblique ribs, which run continuously, but are slightly diminishing in number, up the spire, there being about 15 on the last and 11 on the first regular whorl. On the base they bend strongly to the right, and die out at the point of the snout. They are parted by hollowed furrows which are rather broader than they. Both ribs and furrows are scratched with very fine, almost microscopic lines of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Striolata
''Clionella striolata'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 14 mm and 22 mm. The squat, bucciniform shell has convex whorls and a rather large aperture. The siphonal canal is barely notched. The anal sinus is very shallow. The arcuate ribs number 14-19 per whorl, but becoming sometimes obsolete on later whorls. The color of the shell consists of patches of yellowish-brown. Characteristic for this species is that the spiral sculpture shows 4–5 well-spaced grooves per whorl. Furthermore, the subsutural cord is feeble.Kilburn, R.N. (1985). ''Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 2. Subfamily Clavatulinae''. Ann. Natal Mus. 26(2), 417–470. Distribution This marine species occurs in lower midtidal rock pools off Namaqualand to Cape Hangklip, South Africa. References * Turton, W. H. 1932. The marine shells of Port Alfred, South Afric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clionella Lobatopsis
''Clionella lobatopsis'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. ''Clavatula lobatopsis'' Barnard, 1963, was transferred to ''Gemmula (Ptychosyrinx)'' in the Turrinae Turrinae is a former subfamily of predatory sea snails, marine gastropod mollusks in the family Turridae the turrids. Genera Genera in the subfamily Turrinae include: *''Austrogemmula '' Laseron, 1954: synonym of '' Epidirella'' Iredale, ... by Kilburn (1983) Description Distribution This marine species occurs off the West Cape Province, Rep. South Africa References * Barnard, Keppel Harcourt. ''Deep sea Mollusca from west of Cape Point, South Africa.'' South African Museum, 1963. Endemic fauna of South Africa lobatopsis Gastropods described in 1963 {{clavatulidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
