Cyrtopleura costata (Linneaus, 1758) - Angel wing

The Cyrtopleura costata can attain lengths of up to 20 cm, but at Bigisanti there were some found that were only 10 cm. Its color varies from white to slate grey. The interior of the shell is furrowed due to the external ribs, the periostracum thin and grayish valves bear 24-27 strong beaded ribs, which are especially sharp and abrasive anteriorly. The hinge extends dorsally into a large unseptated umbonal reflection. Under the beaks there is a spoon-shaped apophysis, but which is often missing in specimens washed up on the beach. Margins crenulate. They live one foot under the surface. In Cuba this species is eaten, and is fairly common all along the beach especially at Krofajapasi kreek.