Assiminea grayana

Assiminea grayana, common name the "dun sentinel", is a species of very small (4–6 mm.) salt marsh snail, a terrestrial (or marine gastropod mollusk in the family Assimineidae.

Assiminea grayana

Least Concern  (IUCN 3.1)
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily:
Rissooidea
Family:
Assimineidae
Genus:
Assiminea
Species:
A. grayana
Binomial name
Assiminea grayana
Fleming, 1828

Habitat

This species lives in habitats that are intermediate between land and saltwater: in estuaries and salt marshes, at, or right above, the high tide level.[1]

Description

The 5 mm high x 3 mm. wide shell is semi-transparent and conical, with six or seven flat-sided or slightly swollen whorls and a sharp apex. It bears fine irregular growth lines and faint spiral lines but appears smooth . The oval or ear-shaped aperture is small and has a thickened peristome. The inner lip is reflexed over the base of the last whorl. There is no umbilicus. The colour is horn or tan, often with a broad reddish band on the last whorl.

Distribution

This small snail lives in Western Europe, primarily on the southern part of the North Sea coasts, in countries and islands including:

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References
  1. Kerney, Michael, 1999, Atlas of the land and freshwater molluscs of Britain and Ireland, Harley Books, Colchester, England, ISBN 0-946589-48-8.


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