The radiating sculpture consists of occasional faint impressed incremental lines.

The spiral sculpture consists of occasional microscopic striae, and a single strap-like band appressed to the suture.

It bears numerous flattish squarish nodules or elevations, which coronate the whorls.

The base of the shell is rounded, depressed in the center, which is nearly filled with a mass of white callus having a very finely granular surface.

The granular surface of the callus is common to the young of other species, and is lost in the adult.