The portion anterior to it is marked by distant, low, broad, feebly developed axial ribs, which appear as nodules above the sulcus.

The posterior portion of base is well rounded, anterior part is produced rendering the left outline of the whorl concave, marked by feeble extensions of the ribs which disappear shortly after passing over the periphery.

The entire surface of the spire and base are marked by very fine, closely spaced wavy spiral striations.

The columella is stout, somewhat sinuous and twisted, covered by a thin callus, which also extends over the parietal wall.

In some of the young specimens the space between the sulcus and the summit and the tip of base are white, the rest light brown.