Pulteney, 1799
Description (shell):
Shell thin and brittle, elongate; dorsal and ventral margins straight, parallel, anterior end of shell obliquely truncate, with a distinct dorsoventral groove close to margin. Sculpture of fine concentric lines, distinct along growth stages. A single cardinal tooth in each valve, no laterals. Anterior adductor scar almost as long as ligament, posterior small and round, often close to the dorsal edge of the pallial sinus (S. marginatus-drawing).
Size:
Up to 120 mm long.
Colour:
White or yellow, periostracum glossy, light olive or brown. Inner surfaces white or yellowish.
Habitat:
Burrows in sand, from the lower shore into the shallow sublittoral.
Distribution:
Southern North Sea to the Mediterranean and north Africa (Distr. S. marginatus).