The body whorl carries four larger and more undulating ones above the angle and ten below it.

The protoconch is horny, mamillate, three and a half whorled, the larger sculptured with a raised network, contrasting sharply by colour and texture with the adult shell, which suddenly commences with a thick raised white tongue at the suture.

The columella is arched, overlaid by a callus which ends abruptly where the aperture narrows.

The outer lip is massive, ridged externally by a dozen transverse cords which denticulate the edges.

The aperture mounts the preceding whorl to the height of two spiral cords, and encloses a deep wide anal notch with a prominent callus.