The anterior three-fifths are marked by strong, broad, low, rounded, slightly protractive axial ribs, which are strongest at their junction with the sulcus, beyond which they scarcely extend.

The base of the body whorl is moderately long, marked by the continuations of the ribs, which gradually weaken in strength as they pass forward.

The entire surface of the spire and base are marked by lines of growth and numerous, closely crowded, fine, wavy, spiral striations.

The sigmoid columella is covered by a thin callus which also extends over the parietal wall, in the posterior portion of which it becomes decidedly thickened.

The intercostal spaces and slight extensions of their areas posteriorly across the sulcus and the summit of the keel are chestnut brown.