''Euchelus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of sea snails,

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

s in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Chilodontaidae (formerly in the family

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resembles ...

Description

The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. The

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane flo ...

s are rounded and with spirally granose revolving ribs. 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 ...

is subcircular. The outer

lip The lips are the visible body part at the mouth of many animals, including humans. Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be ...

is thickened, and crenulate within. The

columella Lucius Junius Moderatus Columella (; Arabic: , 4 – ) was a prominent writer on agriculture in the Roman Empire. His ' in twelve volumes has been completely preserved and forms an important source on Roman agriculture, together with the ...

shows a central tooth or a notch at the base. The operculum has few whorls that are rapidly increasing.

Distribution

This marine species occur in the Indo-Pacific.

Species

Species within the genus ''Euchelus'' include: * '' Euchelus alarconi'' Rehder, 1980 * '' Euchelus asper'' (Gmelin, 1791) * ''

Euchelus atratus ''Euchelus atratus'', common name the blackish margarite, is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae. Description The size of the shell varies between 5 mm and 21 mm. The solid, umbilicate sh ...

'' (Gmelin, 1791) * '' Euchelus barbadensis'' Dall, 1927 * '' Euchelus bermudensis'' Moolenbeek & Faber, 1989 * '' Euchelus bitoi'' Nomura & Hatai, 1940 * '' Euchelus circulatus'' (Anton, 1849) * ''

Euchelus dampierensis ''Euchelus dampierensis'' is a species of sea snail, a marine gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class c ...

'' Jansen, 1994 * ''

Euchelus decora ''Euchelus decora'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontaidae Chilodontaidae is a taxonomic family of mostly small deepwater sea snails, marine gastropod molluscs in the clade Vetigastropoda (accordi ...

'' Poppe & Tagaro, 2016 * ''

Euchelus eucastus ''Euchelus eucastus'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Rosenberg, G. (2012). ''Euchelus eucastus'' Dall, 1927. Retrieved through: World Register of Marine Species The World Register of Marine ...

'' Dall, 1927 * ''

Euchelus guttarosea ''Euchelus guttarosea'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae. Description The height of the small shell attains 6 mm. Its color is all white. Or the upper surface of the whorls show very sma ...

'' Dall, 1889 * ''

Euchelus horridus ''Euchelus'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae (formerly in the family Trochidae). Description The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. ...

'' (Philippi, 1846) * ''

Euchelus hummelincki ''Euchelus hummelincki'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Rosenberg, G. (2012). ''Euchelus hummelincki'' Moolenbeek & Faber, 1989. Retrieved through: World Register of Marine Species at http:// ...

'' Moolenbeek & Faber, 1989 * ''

Euchelus mysticus ''Euchelus mysticus'', common name the mysticus margarite, is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2014). Euchelus mysticus Pilsbry, 1889. Accessed through: World Register of Marine Specie ...

'' Pilsbry, 1889 * ''

Euchelus oxytropis ''Euchelus'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae (formerly in the family Trochidae). Description The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. ...

'' (Philippi, 1848) * ''

Euchelus persicus ''Euchelus'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae (formerly in the family Trochidae). Description The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. ...

'' (E. von Martens, 1874) * ''

Euchelus polysarkon ''Euchelus'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae (formerly in the family Trochidae). Description The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. ...

'' Vilvens, 2017 * ''

Euchelus pullatus ''Euchelus pullatus'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae. Description The height of the shell attains 19 mm. The solid, thick shell has a globose-conic shape. it is imperforate when adult, ...

'' Anton, 1848 * ''

Euchelus scaber ''Euchelus'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae (formerly in the family Trochidae). Description The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. ...

'' (Linnaeus, 1758) ;Taxon inquirendum: * ''Euchelus maculosus'' Pease, 1863 ; Species brought into synonymy: * ''Euchelus (Herpetopoma)'' Pilsbry, 1890; synonym of ''

Herpetopoma ''Herpetopoma'' is a genus of sea snails, marine gastropod molluscs of the family Chilodontaidae.Bouchet, P. (2010). Herpetopoma Pilsbry, 1890. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdeta ...

'' Pilsbry, 1890 * ''Euchelus (Nevillia)'' H. Adams, 1868; synonym of '' Nevillia'' H. Adams, 1868 * ''Euchelus alabastrum'' (Reeve, 1858); synonym of '' Euchelus asper'' (Gmelin, 1791) * ''Euchelus alarconi'' Rehder, 1980: synonym of ''

Herpetopoma alarconi ''Herpetopoma alarconi'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Euchelus alarconi'' Rehder, 1980. Retrieved through: World Register of Marine Species at http://www.marinespecies.o ...

'' (Rehder, 1980) * ''Euchelus ampullus'' Tate, 1893; synonym of ''

Vaceuchelus ampullus ''Vaceuchelus ampullus'' is a species of sea snail, a marine (ocean), marine gastropod mollusk in the family (biology), family Chilodontidae (gastropods), Chilodontidae.Bouchet, P. (2012). ''Vaceuchelus ampullus'' (Tate, 1893). Retrieved through: ...

'' (Tate, 1893) * ''Euchelus angulatus'' Pease, 1867; synonym of '' Vaceuchelus angulatus'' (Pease, 1867) * ''Euchelus bellus'' Hutton, 1873; synonym of ''

Herpetopoma bellum ''Herpetopoma bellum'' is a species of sea snails, marine gastropod mollusc in the family Chilodontidae.Rosenberg, G. (2012). Herpetopoma bellum. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxd ...

'' (Hutton, 1873) * ''Euchelus bicinctus'' Philippi, 1849: synonym of ''

Clanculus tonnerrei ''Clanculus tonnerrei'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. Many specimens of ''Clanculus tonnerrei'' (G & H Nevill 1874) have been misidentified as belonging to ''Euchelus bicinctus,'' ...

'' (G. Nevill & H. Nevill, 1874) * ''Euchelus bourcierei'' Crosse, 1863: synonym of '' Herpetopoma instrictum'' (Gould, 1849) * ''Euchelus bronni'' Dunker, 1860: synonym of '' Clanculus bronni'' Dunker, 1860 * ''Euchelus corrugatus'' Pease, 1861: synonym of ''

Herpetopoma corrugatum ''Herpetopoma corrugatum'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Herpetopoma corrugatum'' (Pease, 1861). Retrieved through: World Register of Marine Species at http://www.marines ...

'' (Pease, 1861) * ''Euchelus erythraeensis'' Sturany, 1903; synonym of ''

'' (G. Nevill & H. Nevill, 1874) * ''Euchelus favosus'' Melvill & Standen, 1896; synonym of ''

Vaceuchelus clathratus ''Vaceuchelus clathratus'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Vaceuchelus clathratus'' (A. Adams, 1853). Retrieved through: World Register of Marine Species at http://www.mari ...

'' (A. Adams, 1853) * ''Euchelus fischeri'' (Montrouzier in Souverbie & Montrouzier, 1866): synonym of ''Monodonta fischeri'' Montrouzier n Souverbie & Montrouzier 1866; synonym of ''Herpetopoma fischeri'' (Montrouzier n Souverbie & Montrouzier 1866); synonym of ''

Herpetopoma exasperatum ''Herpetopoma exasperatum'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Herpetopoma exasperatum'' (A. Adams, 1853). Retrieved through: World Register of Marine Species at http://www.ma ...

'' (A. Adams, 1853) * ''Euchelus gemmula'' Turton, 1932; synonym of ''

Vaceuchelus gemmula ''Vaceuchelus gemmula'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Vaceuchelus gemmula'' (Turton, 1932). Retrieved through: World Register of Marine Species at http://www.marinespecie ...

'' (Turton, 1932) * ''Euchelus gemmatus'' (Gould, 1845): synonym of '' Herpetopoma gemmatum'' (Gould, 1845) * ''Euchelus hachijoensis'' Pilsbry, 1904: synonym of '' Herpetopoma rubrum'' (A. Adams, 1851) * ''Euchelus lamberti'' (Souverbie in Souverbie & Montrouzier, 1875): synonym of '' Tallorbis roseola'' G. Nevill & H. Nevill, 1869 * ''Euchelus lischkei'' Pilsbry, 1904: synonym of '' Herpetopoma lischkei'' (Pilsbry, 1904) * ''Euchelus midwayensis'' Habe & Kosuge, 1970: synonym of '' Danilia eucheliformis'' (Nomura & Hatai, 1940) * ''Euchelus natalensis'' E. A. Smith, 1906; synonym of ''

Vaceuchelus natalensis ''Vaceuchelus natalensis'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Vaceuchelus natalensis'' (E.A. Smith, 1906). Retrieved through: World Register of Marine Species at http://www.ma ...

'' (E. A. Smith, 1906) * ''Euchelus profundior'' May, 1915; synonym of ''

Vaceuchelus profundior ''Vaceuchelus profundior'', common name the deepwater top shell, is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Vaceuchelus profundior'' (May, 1915). Retrieved through: World Register of ...

'' (May, 1915) * ''Euchelus providentiae'' Melvill, 1909: synonym of '' Herpetopoma providentiae'' (Melvill, 1909) * ''Euchelus quadricarinatus'' (Holten, 1802): synonym of '' Euchelus asper'' (Gmelin, 1791) * ''Euchelus ringens'' Schepman, 1908; synonym of '' Herpetopoma ringens'' (Schepman, 1908) * ''Euchelus ruber'': synonym of '' Herpetopoma rubrum'' (A. Adams, 1853) * ''Euchelus scabriusculus'' A. Adams & Angas, 1867; synonym of ''

Herpetopoma scabriusculum ''Herpetopoma scabriusculum'', common name the rough top shell, is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Herpetopoma scabriusculum'' (A. Adams & Angas, 1867). Retrieved through: ...

'' (A. Adams & Angas, 1867) * ''Euchelus scrobiculatus'' (Souverbie, 1886); synonym of ''

Vaceuchelus scrobiculatus ''Vaceuchelus scrobiculatus'' is a species of sea snail, a marine gastropod mollusc in the family Chilodontidae. Description The height of the shell attains 8 mm. The imperforate, dull white shell has an ovate-conic, subventricose shape. ...

'' (Souverbie, 1866) * ''Euchelus seychellarum'' G. Nevill & H. Nevill, 1869; synonym of ''

Herpetopoma seychellarum ''Herpetopoma seychellarum'' is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae.Bouchet, P. (2012). ''Herpetopoma seychellarum'' (G. Nevill & H. Nevill, 1869). Retrieved through: World Register of Marine Specie ...

'' (G. Nevill & H. Nevill, 1869) * ''Euchelus smithi'' Dunker, R.W., 1882: synonym of ''

Monilea smithi ''Monilea smithi'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Bouchet, P. (2014). Monilea smithi (Wood, 1828). Accessed through: World Register of Marine Species at http://www.marinespecies.org/a ...

'' (Wood, 1828) * ''Euchelus townsendianus'' Melvill & Standen, 1903; synonym of '' Clypeostoma townsendianum'' (Melvill & Standen, 1903) * ''Euchelus xeniolum'' Melvill, 1918; synonym of ''

Herpetopoma xeniolum ''Herpetopoma xeniolum'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae. D.G. Herbert (2012) wasn't convinced that this poorly known species belonged in the genus ''Herpetopoma'' and puts it in ''Herpetopoma ...

'' (Melvill, 1918)

References

* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp
Herbert D.G. (2012) A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean. African Invertebrates, 53(2): 381–502
{{Commonscat Chilodontaidae Gastropod genera