Shell medium sized, thin and fragile. Outline elongate, longer than high. Inequilateral shell, with rounded anterior margin, and rostrate upturned dorsally, widely gaping posterior margin. Sculpture of weak concentric undulations and lines. Ligament internal on a chondrophore. Hinge without dentition. Distinct pallial sinus.
common size :
to 75 mm in length, generally smaller in Red Sea (Oliver, 1992).
It is a readily distinguishable species of a genus with no Mediterranean representative and only one species known from the Red Sea.
BIOLOGY / ECOLOGY
deeply burrowing in muds from lower shore (ca. 5 m) to offshore (ca. 59 m).