''Peristichia'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

s, marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Pyramidellidae Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromol ...

, the pyrams and their allies.WoRMS (2010). ''Peristichia''. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through:

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

at http://www.marinespecies.org/aphia.php?p=taxdetails&id=415795 on 31 January 2012

Taxonomy

In his original paper, Dall proposed ''Peristichia'' as a genus of dubious affinities and placed it later in the family Pyramidellidae.

Paul Bartsch Paul Bartsch (14 August 1871 Tłumaczów, Tuntschendorf, Silesia – 24 April 1960 McLean, Virginia) was an American Malacology, malacologist and carcinologist. He was named the last of those belonging to the "Descriptive Age of Malacology". E ...

, his collaborator, later thought it was a subgenus of ''

Turbonilla ''Turbonilla'' is a large genus of ectoparasitic sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies.Bouchet, P.; Gofas, S. (2011). ''Turbonilla'' Risso, 1826. Accessed through: World Register of Mar ...

''.P. Bartsch (1904), Proc. Biol. Soc. Washington, vol. 17. p. 9

Johannes Thiele Johannes Thiele may refer to: *Johannes Thiele (zoologist) *Johannes Thiele (chemist) {{hndis, Thiele, Johannes ...

does not even mention this genus in his ''Handbuch der Systematischen Weichtierkunde''. (1929).

Wilhelm August Wenz Wilhelm August Wenz (21 October 1886 – 12 September 1945) was a German malacologist, born in Frankfurt am Main. He is the author of the 7-part Gastropoda section of ''Handbuch der Paläozoologie'' (1938-1944), a very important review that de ...

in his ''Handbuch der Paläozoologie, Band 6, Gastropoda'', also thought it was probably a subgenus of ''Turbonilla'', but added a question mark. However, a close examination shows that it belongs in the family Pyramidellidae, close to '' Tryptichus'' Mörch, 1875, differing from it only in having one (instead of two) basal central spiral cords and having no

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

r fold.

Species

Species within the genus ''Peristichia'' include: * '' Peristichia agria'' Dall, 1889 * '' Peristichia bathyraphe'' (G.B. Sowerby I, 1901) * '' Peristichia hermosa'' (Lowe, 1935) * '' Peristichia lepta'' Pimenta, Santos & Absalao, 2008 * '' Peristichia pedroana'' (Dall & Bartsch, 1909) * '' Peristichia pliocena'' (Bartsch, 1955) * '' Peristichia toreta'' Dall, 1889

References

External links

ITIS

World Register of Marine Species

Dall, W.H. (1889). Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College. 18: 1-492, pls. 10-40
{{Taxonbar, from=Q3138148 Pyramidellidae