Those above are very obliquely striate and flattened, longitudinally inegularly plicate, sharply carinated at the periphery and produced into radiating compressed truncated digitations.

The interior aperture is very oblique, and angular at periphery, its lower margin nearly straight.

The oblique columella is slightly concave, and excavated at the position of the umbilicus, with a spiral white rib.

The operculum is white outside, excavated on each side of a strong granulose curved central rib, with the terminations connected by a shorter ridge curved in the opposite direction.

[3] This species occurs from the Gulf of California, Western Mexico to Panama