The shell is small, of a yellowish green-color, minutely wrinkled by the lines of growth.

The spire is flat,[1] composed of 2.5-3 whorls,[2] separated by a well-defined suture.

The outer whorl has a sharp margin on a level with the spire, diminishing near, but still modifying, the aperture.

Below this line the whorl is very convexly rounded so as to encircle a small, deep, abruptly formed umbilicus.

This whorl rapidly enlarges, and terminates in a very large, not very oblique aperture, with the lip expanded so as to make it trumpet-shaped.