Peringia
Encyclopedia
Peringia is a genus
of very small snail
s with gill
s and an operculum
, gastropod mollusks in the family Hydrobiidae
.
This genus has become a synonym for Hydrobia
Hartmann, 1821
These snails live in intermediate habitats at high tide level, on mud, in protected estuarine 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.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of very small snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s with gill
Gill
A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water, afterward excreting carbon dioxide. The gills of some species such as hermit crabs have adapted to allow respiration on land provided they are kept moist...
s and an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, gastropod mollusks in the family Hydrobiidae
Hydrobiidae
Hydrobiidae, common name mud snails, is a large cosmopolitan taxonomic family of very small freshwater snails and brackish water snails that have an operculum, aquatic gastropod mollusks in the clade Littorinimorpha.- Distribution :...
.
This genus has become a synonym for Hydrobia
Hydrobia
Hydrobia is a genus of very small brackish water snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae...
Hartmann, 1821
These snails live in intermediate habitats at high tide level, on mud, in protected estuarine 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 ulvae : synonym of Hydrobia ulvae (Pennant, 1777)
- Peringia depressa
- Peringia mabellil
- Peringia obeliscus
External links
- Info at: http://www.marlin.ac.uk/species/taxon_Hydrobiaulvae.htm
- Species at: http://www.marlin.ac.uk/species/taxon_Hydrobiaulvae.htm
- Images of P. ulvae at: http://www.gastropods.com/1/Shell_2201.html