« Shell oval, suboblique, rather solid, inaequilateral, smooth, orange red, concentrically banded, interior red in the centre, white round the margin ; posterior side short, slightly flexuous, dorsal margin sloping, concave near the umboes, ligament imbedded, ventral margin sloping upwards, subtruncated at the end ; anterior side obliquely oblong, dorsal margin sloping, ventral margin convex, hinge margin thick, without lateral teeth. » – G. B. Sowerby in L. A. Reeve: Conchologia iconica vol. XVII, pl. 17 (1866), via BHL.