(Montagu, 1803)
Description (shell):
Glossy, fragile, elliptical, with spiral striations, aperture usually larger than last whorl and spire height combined. Spire flattened or indented.
Size:
Shell up to 4 mm, total length up to 6 mm.
Colour:
Translucent whitish.
Animal:
Body white. Cephalic shield indented medially, cephalic tentacles flattened, stout and somewhat pointed.
Habitat:
Found in fine muddy sand; sublittoral, to 2000 m.
Distribution:
Predominantly northern distribution (Distr. R. umbilicata).