As with all members of Family Veneridae, this species has no winglike extensions at the umbo, the two shells are of similar shape and the anterior and posterior ends are not highly differentiated from one another. Both valves have three well-developed cardinal teeth (photo). They have two adductor muscle scars of similar size. The umbones are near the middle of the shell. In this species the shells are oval (longer than high) and it has concentric ridges and strong radial ribs which are strongest at the posterior end. The inner ventral margin of the shell is not serrated. Color variable gray or brown, often with streaks (photo) or angular patterns. Frequently there is a purple (photo) or yellow color (photo) inside the shell. Shell has a pallial sinus (photo). The siphons are short, the black tips are separated at the end (photo), and they can be withdrawn entirely within the shell. Length up to 7.5 cm.