[4] The shell is greenish brown and roughly an equilateral triangle in profile with a slightly wavy thickened edge on the bottom of the whorl and sculpture consisting of fine diagonal spiral ridges.

The single most striking feature is a brilliant spot of reddish-orange at the base of the umbilical pit which is bordered by a dark brown to black outer edge.

The folds stand at right angles to the striae, and are interrupted one-third of the distance from the suture to the periphery by two spiral impressed furrows.

The base of the shell is concave, radiately finely lamellose striate, with a somewhat nodulose rib revolving midway between the periphery and the center.

The oval operculum is black to yellowish inside, with a marginal apex, frequently concealed by growth of the last whorl.