Upon the convexity of this whorl, may be counted nine or ten distant, parallel and transverse lines of a bright chestnut color, sometimes brown, at other times blackish.

The spire is composed of eight whorls, the three lower of which are smooth, and the other five marked with small longitudinal folds, slightly arcuated.

The outer lip is arcuated towards the top, thinner from the middle to the base, and armed in this part with five conical, pointed teeth, the lowest of which are longest.

The left lip forms a plate which laps over upon the body of the shell, and gives rise to a small projecting keel, which is terminated below by a pointed and oblique tooth, from whence a rounded fold is given out, which is observed to wind spirally into the cavity.

[2] This species occurs in the Red Sea and in the Indian Ocean off Réunion, Mauritius and the Mascarene Basin; in the Indo-West Pacific.