''Perrinia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

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 The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

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 e ...

s in the

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

Chilodontaidae Chilodontaidae is a taxonomic family of mostly small deepwater sea snails, marine gastropod molluscs in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Taxonomy The family was previously in ...

. This genus has a long time been regarded as a subgenus of ''

Turcica ''Turcica'' is a genus of sea snails, marine gastropod mollusks in the family Eucyclidae. Kano et al. (2009) have argued that ''Turcica'' belongs in the family Calliotropidae. Description The thin, subdiaphanous, imperforate shell has a conoi ...

'' H. & A. Adams, 1854. Previously it was considered a (problematic) subgenus of ''

Euchelus ''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. The ...

'' Philippi, 1847.

Description

The imperforate shell is small (less than 20 mm) and has a trochiform 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 floral ...

s are flattened and cancellated with a strongly indented suture. 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 quadrangular. The outer lip is lirate (= with fine linear elevations) within. The columella is short, nearly straight, with several tubercles near the base.Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
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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 specialist ...

(WoRMS) the following species are included within the genus ''Perrinia'' : * '' Perrinia angulifera'' A. Adams, 1853 * '' Perrinia cantharidoides'' Vilvens, 2017 * '' Perrinia chinensis'' (G. B. Sowerby III, 1889) * '' Perrinia concinna'' (A. Adams, 1864-f) * '' Perrinia docili'' Poppe, Tagaro & Dekker, 2006 * '' Perrinia elisa'' (Gould, 1849) * '' Perrinia guadalcanalensis'' Vilvens, 2017 * '' Perrinia konos'' (Barnard, 1964) * '' Perrinia morrisoni'' (Ladd, 1966) * '' Perrinia nigromaculata'' (Schepman, 1908) * '' Perrinia squamicarinata'' (Schepman, 1908) * '' Perrinia stellata'' (A. Adams, 1864) ;Species brought into synonymy: * ''Perrinia cancellata'' (

Schepman Mattheus Marinus Schepman (17 August 1847 – 19 November 1919) was a Dutch malacologist. He was one of the foremost collectors of mollusc shells in the Netherlands, and was also high on the overall list of European collectors. Dutch collecto ...

, 1908): synonym of ''

Clypeostoma cancellatum ''Clypeostoma cancellatum'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.MolluscaBase eds. (2021). MolluscaBase. Clypeostoma cancellatum (Schepman, 1908). Accessed through: World Register of Marine Species at: ...

'' (Schepman, 1908) * ''Perrinia cecileae'' Poppe, Tagaro & Dekker, 2006: synonym of ''

Clypeostoma cecileae ''Clypeostoma cecileae'' is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.MolluscaBase eds. (2021). MolluscaBase. Clypeostoma cecileae (Poppe, Tagaro & Dekker, 2006). Accessed through: World Register of Marine S ...

'' (Poppe, Tagaro & Dekker, 2006) (original combination) * ''Perrinia plicifera'' (Schepman, 1908): synonym of '' Perrinia angulifera'' (A. Adams, 1853)

References

External links

Adams, H. & Adams, A. (1853-1858). The genera of Recent Mollusca; arranged according to their organization. London, van Voorst. Vol. 1: xl + 484 pp.; vol. 2: 661 pp.; vol. 3: 138 pls.

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
{{Commons category Chilodontaidae Gastropod genera