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Antiplanes
''Antiplanes'' is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae,. Description (Original description) These deep-water and abyssal forms are smooth except for incremental lines and sometimes fine spiral striae. The periostracum is conspicuous and the shell disposed to be chalky. The anal sulcus is shallow and more or less rounded, usually situated some distance from the suture, but not quite on the periphery of the whorl. The siphonal canal is rather wide and long and often a little recurved. The aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An opt ... is unarmed. There are both dextral and sinistral species. Species Species within the genus ''Antiplanes'' include: * '' Antiplanes abarbarea'' Dall, 1919 * '' Antiplanes abyssalis'' Kantor & Sysoe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Catalinae
''Antiplanes catalinae'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The length of the shell attains 27 mm, its diameter 7.6 mm. (Original description) The sinistral shell is thin, elongated and slender. It contains 10-11 whorls. Its color is light, pinkish -brown, without bands. 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 shell is sculptured by fine incremental lines and on the last whorls a few obscure, spiral striations, mostly below the periphery. The anal fascicle is traceable on the spire as a flattened or obscurely grooved band. The aperture is narrow. The siphonal canal is wide and short. The columella is nearly straight, with a well-defined callus, obliquely truncate below. The outer lip The lips are the visible body part at the mouth of many animals, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Vinosa
''Antiplanes vinosa'', common name the left-handed turrid, is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The length of this sinistral shell attains 30 mm. Distribution This marine species occurs off the Aleutians and Northern Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north .... References * Dall, W.H. (1874a) Catalogue of Shells from Bering Strait and the Adjacent Portions of the Arctic Ocean, with Descriptions of Three New Species. 7 pp. * Hasegawa K. (2009) ''Upper bathyal gastropods of the Pacific coast of northern Honshu, Japan, chiefly collected by R/V Wakataka-maru''. In: T. Fujita (ed.), Deep-sea fauna and pollutants off Pacific coast of northern Japan. National Museum of Nature and Science Monographs 39: 22 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Sanctiioannis
''Antiplanes sanctiioannis'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids. Description The length of the shell varies between 20 mm and 40 mm; maximum diameter 14 mm. The fusiform shell contains 10 slightly convex whorls. The shell is clothed with a smooth, thickish, olive epidermis. The shell is covered with very narrow spiral striae and incremental flexuous stripes. The dark reddish aperture is ovate and contracted below. It measures about 2/5 of the total length. The siphonal canal is broad and slightly oblique. The narrow outer lip has a wide sinuation above the middle. The columella is twisted. The operculum is unguiform. Distribution This marine species occurs off he Pacific coast of northern Honshu, Japan; also in the Bering Sea The Bering Sea (, ; rus, Бе́рингово мо́ре, r=Béringovo móre) is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Litus
''Antiplanes litus'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description 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. There is also a semi-obsolete fine spiral striation covering the whole surface and somewhat stronger on the siphonal canal. There is no axial sculpture. The aperture is narrow. The anal sulcus is feeble, close to the suture hardly forming a fasciole. The outer lip is thin and slightly produced. The inner lip is erased. The columella is straight. The si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Bulimoides
''Antiplanes bulimoides'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The length of the shell is 31 mm, its diameter 15 mm. (Original description) The elongate shell is decollate. It contains six or more whorls, four distinctly remaining in the holotype. The suture is distinct and not appressed. The whorls are moderately convex, smooth, with a pale polished greenish periostracum over a white substratum, in spots minutely granulose, apparently from some wrinkling of the periostracum. The anal sulcus is wide, shallow, hardly forming a fasciole. The outer lip is thin, sharp and moderately produced. The inner lip shows a thin white layer of callus. The columella is straight, with an anterior oblique attenuation. The siphonal canal is wide and hardly differentiated. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Amphitrite
''Antiplanes amphitrite'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae,. These is one subspecies: ''Antiplanes amphitrite beroë'' Dall, 1919: it is larger (height 19 mm, diameter 9 mm.), with the suture appressed, the fasciole close to it, and bearing three or four spiral grooves Description The length of the shell attains 13.5 mm, its diameter 6 mm. (Original description) The white shell is covered with a pale olivaceous periostracum. It contains five or more well-rounded whorls exclusive of the (lost) protoconch. These show a rounded shoulder and a distinct but not appressed suture. The axial sculpture consists of, on the spire, obscure nodulations at the shoulder (about 15 on the penultimate whorl) which do not form ribs and are absent from the body whorl. The incremental lines are fine but obscure. Beside these there are minute, anteriorly obliquely retractive lines somewhat microscopically reticulated by the lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Abarbarea
''Antiplanes abarbarea'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae,. Description The length of the shell attains 21.5 mm, its diameter 8 mm. (Original description) The whitish, acute shell has one globular protoconch and 6½ subsequent, well-rounded whorls. The suture is distinct, not appressed. The spiral sculpture consists of faint obscure grooves with wider interspaces over the whole spire but obsolete on the body whorl, and a series of faint irregular peripheral nodulosities on the upper part of the spire. The axial sculpture consists of rather coarse, irregular incremental lines, retractively arcuate in front of the suture, though there is no distinct fasciole. The aperture is elongate. The anal sulcus is close to the suture and is rather deep. The outer lip is thin and smooth inside. The inner lip is erased. The columella is straight, smooth and attenuated in front. The siphonal canal is short, wide and nearly straight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Profundicola
''Antiplanes profundicola'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae Pseudomelatomidae is a family of predatory sea snails, marine gastropods included in the superfamily Conoidea (previously Conacea) and part of the Neogastropoda ( Bouchet & Rocroi, 2005). In 1995 Kantor elevated the subfamily Pseudomelatomina .... Description The length of the shell attains 30 mm, its diameter 10.4 mm. Distribution This marine species occurs from the Arctic to California, USA. References External links Bartsch, P, Some turrid mollusks of Monterey Bay and vicinity; Proceedings of the Biological Society of Washington, v. 57 p. 57-68* * profundicola Gastropods described in 1944 {{Pseudomelatomidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Obesus
''Antiplanes obesus'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The length of the shell is up to 45 mm. Distribution This marine species occurs off Japan and the Kurile Islands The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese: or ) are a volcanic archipelago currently administered as part of Sakhalin Oblast in the ..., Russia. References * Habe, T. (1958b) ''Description of three new species of the genus Rectiplanes from Japan''. Venus, 20, 181–186 * Hasegawa K. (2009) ''Upper bathyal gastropods of the Pacific coast of northern Honshu, Japan, chiefly collected by R/V Wakataka-maru''. In: T. Fujita (ed.), Deep-sea fauna and pollutants off Pacific coast of northern Japan. National Museum of Nature and Science Monographs 39: 225–383. * Hasegawa K. & Okutani T. (2011) ''A review of bathyal shell-bearing gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Diomedea
''Antiplanes diomedea'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The length of the shell attains 40.2 mm, its diameter 15.8 mm. Distribution This species occurs in the Pacific Ocean off California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ..., USA. References * Abbott R. T. (1974). ''American seashells. The marine Mollusca of the Atlantic and Pacific coast of North America''. ed. 2. Van Nostrand, New York. 663 pp., 24 pls External links Bartsch, P, Some turrid mollusks of Monterey Bay and vicinity; Proceedings of the Biological Society of Washington, v. 57 pp. 57–68* * diomedea Gastropods described in 1944 {{Pseudomelatomidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Antigone
''Antiplanes antigone'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The height of the shell attains 23 mm, its diameter 10 mm. (Original description) The solid, white shell has an olivaceous periostracum. The spire of the holotype is badly eroded, short, indicating a total of five whorls exclusive of the protoconch. The body whorl and a half alone retain their normal condition. The suture is distinct and not appressed. The anal fasciole is narrow, constricted and separated from the suture by an obscure ridge. In front of the fasciole is an undulated rounded ridge from which extend obliquely protractive obscure riblets more or less obsolete on the body whorl, probably stronger and more distinct on the spire when not eroded. There is also very obscure spiral grooving with much wider interspaces on the base. The entire surface is minutely irregularly vermiculate. The aperture is narrow. The anal sulcus is shallow, rou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiplanes Briseis
''Antiplanes briseis'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae. Description The length of the shell attains , its diameter . (Original description) The elongate, acute, white shell is covered with a very pale olivaceous periostracum. It shows a blunt swollen protoconch of about a 1½ whorl (eroded) and eight subsequent rather flattish whorls. The suture is obscure and appressed. The spiral sculpture consists of one or two feeble flattish cords between the periphery and the succeeding suture on the spire, and on the body whorl about twice as many more or less obsolete. The axial sculpture consists of rather prominent, deeply arcuate incremental lines. The anal fasciole is wide and not impressed. The deepest part of the sulcusis near the periphery. The aperture is narrow. The outer lip is thin, sharp and much produced. The inner lip and the columella are erased, the latter short, straight, obliquely attenuated in front. The siphonal c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |