The pointed spire is formed of six whorls, the upper of which are slightly convex, but little developed, having three or four transverse striae, very apparent, and spotted with brown blotches.

The body whorl is very much inflated, completely surrounded by from fifteen to twenty equal ribs, depressed, but slightly rounded.

The inner lip is thin, diaphanous, spreading upon the body of the shell, to which it adheres, except towards the base, where it becomes free and thicker.

The columella is twisted, and presents a very deep emargination, above which is seen a wide, thick, furrowed tubercle, which appears as if suspended over this hollow.

It is furnished with wrinkles and numerous furrows of a brilliant white, which imperceptibly diminish in size at the base, and above the emargination, which is turned out like a gutter, and perfectly smooth.