[1] This marine snail occurs in the Caribbean Sea, the Gulf of Mexico and off the Lesser Antilles.

The folds number about thirty-six on the body whorl and terminate on the periphery in nodules (or spines in the young,) generally intersected about the middle by two to four spiral impressed lines.

The base of the shell is nearly flat, more or less sharply radiately striate, and spirally lirate.

The short columella is heavy, bituberculate at its base, and bounded by a radiately plicate cordon.

The operculum is oval, light brown within, with a sublateral nucleus.