''Peringia'' 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 ...

of very small

snail A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastro ...

s with

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

s and an operculum,

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

Hydrobiidae Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water snails with an operculum; they are in the order Littorinimorpha. Distribution Hydrobiidae are found in much of the world, ...

.Gofas, S. (2014). Peringia Paladilhe, 1874. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=151626 on 2014-11-14 This genus has become a synonym for ''

Hydrobia ''Hydrobia'' is a genus of very small brackish water snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.Gofas, S. (2011). Hydrobia Hartmann, 1821. Accessed through: World Register of Marine Species at ht ...

'' Hartmann, 1821. These snails live in intermediate habitats at high tide level, on mud, in protected

estuarine An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environment ...

and coastal areas. Because of this habitat these snails are sometimes categorized as marine, sometimes as aquatic in general, and sometimes are included in lists of land snails.

Species within the genus ''Peringia''

* † ''

Peringia benoisti ''Peringia'' is a genus of very small snails with gills and an operculum, gastropod mollusks in the family Hydrobiidae.Gofas, S. (2014). Peringia Paladilhe, 1874. Accessed through: World Register of Marine Species at http://www.marinespecies.or ...

'' (Dollfus & Dautzenberg, 1886) * † '' Peringia conoidea'' (von Koenen, 1883) * '' Peringia depressa'' * † '' Peringia fontannesi'' (Dollfus & Dautzenberg, 1886) * † '' Peringia gottscheana'' (von Koenen, 1883) * ''

Peringia mabellil ''Peringia'' is a genus of very small snails with gills and an operculum, gastropod mollusks in the family Hydrobiidae.Gofas, S. (2014). Peringia Paladilhe, 1874. Accessed through: World Register of Marine Species at http://www.marinespecies.o ...

'' * ''

Peringia obeliscus ''Peringia'' is a genus of very small snails with gills and an operculum, gastropod mollusks in the family Hydrobiidae Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water s ...

'' * ''

Peringia ulvae ''Peringia ulvae'' (or ''Hydrobia ulvae''), common name the Laver spire shell or mudsnail, is a European species of very small aquatic snail with gills and an operculum, a gastropod mollusk in the family Hydrobiidae.Gofas, S. (2010). ''Hydrobi ...

'' (Pennant, 1777) ;Species brought into synonymy: * ''Peringia castroi'' Locard, 1899: synonym of ''

'' (Pennant, 1777) * ''Peringia cyclolabris'' Bourguignat, 1876: synonym of ''

'' (Pennant, 1777) * ''Peringia lusitanica'' Locard, 1899: synonym of ''

'' (Pennant, 1777) * ''Peringia minoricensis'' Paladilhe, 1875: synonym of ''Hydrobia acuta acuta'' (Draparnaud, 1805) * ''Peringia paulinoi'' Locard, 1899: synonym of ''

'' (Pennant, 1777)

References

* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp

External links

* Info at

* Species at

* Images of ''P. ulvae'' at

Hydrobiidae {{Hydrobiidae-stub