''Turcica'' 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 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 ...

Eucyclidae Eucyclidae is a family of gastropods in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). This family has no subfamilies. Genera Genera within the family Eucyclidae include: * '' Amberl ...

. Kano et al. (2009) have argued that ''Turcica'' belongs in the family

Calliotropidae Eucyclidae is a family of gastropods in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). This family has no subfamilies. Genera Genera within the family Eucyclidae include: * '' Amberley ...

Description

The thin, subdiaphanous, imperforate shell has a conoidal shape. 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 display transverse series of granules, the last rounded on the periphery. The thick

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 ...

is spirally twisted posteriorly, ending anteriorly in an obtuse, prominent point. The thin 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 simple and acute.

Distribution

The genus ranges on both shores of the Pacific, from California and Australia northward.

Species

According to the

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific speciali ...

(WoRMS) the following species are included within the genus ''Turcica'' : * ''

Turcica admirabilis ''Turcica admirabilis'' is a species of sea snail, a marine gastropod mollusc in the family Eucyclidae.Keen M. (1971) Sea shells of tropical West America. Marine mollusks from Baja California to Perú, ed. 2. Stanford University Press. 1064 pp. ...

'' Berry, 1969 * ''

Turcica caffea ''Turcica caffea'', common name the two tooth top shell, is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae Eucyclidae is a family of gastropods in the superfamily Seguenzioidea (according to the taxonomy of the G ...

'' (Gabb, 1865) * ''

Turcica imperialis ''Turcica imperialis'' is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae. Description The solid, conoidal shell has an acuminate spire. The base is obliquely produced. Its color is tawny-red variegated, ornamented by ...

'' A. Adams, 1854 * ''

Turcica monilifera ''Turcica monilifera'' is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae. Description The size of the shell varies between 10 mm and 30 mm. The thin shell is conoidal, subdiaphanous and imperforate. Its col ...

'' A. Adams, 1854 ;Species brought into synonymy: * ''Turcica (Perrinia)'' Adams, 1854: synonym of ''

Perrinia ''Perrinia'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae. This genus has a long time been regarded as a subgenus of ''Turcica'' H. & A. Adams, 1854. Previously it was considered a (problematic) subgenus of '' ...

'' H. Adams & A. Adams, 1854 * ''Turcica coreensis'' Pease, 1860: synonym of ''

'' A. Adams, 1854 * ''Turcica helix'' Barnard, 1964: synonym of ''

Herpetopoma helix ''Herpetopoma helix'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.Bouchet, P. (2012). ''Herpetopoma helix'' (Barnard, 1964). Retrieved through: World Register of Marine Species at http://www.marinespecies.o ...

'' (Barnard, 1964) * ''Turcica instricta'' A. Adams 1864: synonym of '' Herpetopoma instrictum'' (Gould, 1849) * ''Turcica konos'' Barnard, 1964: synonym of ''

Perrinia konos ''Perrinia konos'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontaidae.Bouchet, P. (2012). ''Perrinia konos'' (Barnard, 1964). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aph ...

'' (Barnard, 1964) * ''Turcica salpinx'' Barnard, 1964: synonym of '' Clypeostoma salpinx'' (Barnard, 1964) * ''Turcica stellata'' A. Adams, 1864: synonym of ''

Perrinia stellata ''Perrinia stellata'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae . Description The shell size varies between 9 mm to 17 mm Distribution This species is distributed in the Red Sea The Re ...

'' (A. Adams, 1864) * † ''Turcica (Perrinia) waiwailevensis'' Ladd, 1982: 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

{{Taxonbar, from=Q3140741 Eucyclidae Gastropod genera