Biodiversity & Conservation

DeFolin's lagoon snail - Caecum armoricum - General information

Caecum armoricum

Image Dennis R. Seaward - Six specimens of Caecum armoricum. Reference scale 1 mm.
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Distribution map

Caecum armoricum recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)

Why do the maps differ?

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  • WC_Act_1981

General information

Key Icon Researched by: Nicola White Text page icon Refereed by: Dennis R. Seaward

Taxonomy icon Taxonomy

Phylum Mollusca Snails, slugs, mussels, cockles, clams & squid
Class Gastropoda Snails, slugs & sea butterflies
Map icon Recorded distribution in Britain and Ireland Only recorded living from The Fleet, Dorset. One shell record from Connemara, W. Ireland (J.E. Phorson, per. comm..)
Habitat information icon Habitat information Restricted to lagoonal shingle at the water level in positions where sea water percolates into the fleet through Chesil beach. Only recorded in the UK by Seaward (1987) in the mid and lower Fleet, Dorset, where it lives in the spaces between 1-2 cm size pebbles.
Text page icon Description A minute snail, up to 2 mm long. Its shell is neither spirally coiled nor limpet-shaped, but forms a small, short, slightly curved tube open at one end and closed at the other by a septum.

This review can be cited as follows:

Nicola White 2007. Caecum armoricum. DeFolin's lagoon snail. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 25/05/2013]. Available from: <http://www.marlin.ac.uk/speciesfullreview.php?speciesID=2831>