Hydrocenidae

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Hydrocenidae
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Superorder: Neritopsina Order: Neritoida Superfamily: Hydrocenoidea Family: Hydrocenidae Troschel, 1856
Genera and species
See text.

Hydrocenidae is a poorly-known taxonomic family of minute land snails or cave snails with an operculum, terrestrial gastropod mollusks or micromollusks in the superfamily Hydrocenoidea.

These tiny cave snails are not closely related at all to the air-breathing or pulmonate land snails. These hydrocenid snails are more closely related to the marine and freshwater snails known as nerites, the Neritidae.

The shells are minute, ovate, conical-spired, with a semi-circular calcareous operculum.

[edit] Genera and species within the family Hydrocenidae

• Genus Georissa Blanford, 1884
• Genus Hydrocena Pfeiffer, 1841
  • Hydrocena cattaroense (Pfeiffer, 1841)
• Genus Omphalorissa Iredale, 1933
  • Omphalorissa purchasi (Pfeiffer, 1862)

[edit] References

• Hydrocena (TSN 70201). Integrated Taxonomic Information System.
• Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1