Shell equivalve, very fragile. Inequilateral, with beaks subterminal. Outline modioliform, but transversely elongate, narrowly ovoid. Surface smooth with very weak pattern of radial lines discerned only by the dysodont teeth. Hinge with 1-5 very weak dysodont teeth at the anterior end and up to 15 at the posterior part behind the ligament. Periostracum shining.
pale green with very few yellowish radial lines across the dorsal - posterior area.
common size :
to 20 mm.
Resembles Musculista senhousia that is distinguished by its darker, less glossy, more inflated shell and by the fewer, small but definite riblets anterior to the umbones.
BIOLOGY / ECOLOGY
from nearshore to shelf (9-60 m); attached by byssus to clods of mud, often in clusters. Other species of this genus secrete a mucous nest in which they nestle, embedded in soft muddy substrates offshore. At Port Said, also in lagoons.