Specimen collected by Celia Pain from St. Martins Flats Isle of Scilly. Length = 46mm.
<em>Arcopagia crassa</em> (Pennant, 1777)
Found from the Norwegian Sea to the Iberian Peninsula.
Burrows in muddy to coarse sand and shell gravel where it feeds on organic detritus picked up through the siphon.
Solid, almost oval, shell up to about 6.5cm in length. Yellowish white or fawn in colour sometimes with pink or brown radiating streaks. Inside of shell white at the margins and often orange towards the centre. Deep, tongue shaped, pallial sinus. Sculpture of pronounced concentric ridges on valve surface.