 It has six to seven convex whorls, usually with three (rarely five or six) prominent, rounded cinguli, or carinae, separated by much wider, broadly concave interspaces.The uppermost one is usually some distance below the suture, and is often stronger than the rest, producing a slight shoulder.On the body whorl, in specimens with six whorls, there are about seven to nine principal carinae, occasionally with a smaller one interpolated, and becoming more crowded anteriorly.