The tubercles are smooth and polished, but the whole intervening surface is sharply fretted with fine oblique puckerings.

The color of the shell is white, beautifully flecked above with grayish-purple patches, and closely spotted with purplish-pink on the base.

Its concavely conical slope is slightly broken at the sutures by the projection of the two superior rows of tubercles.

The inner lip is strengthened internally by a buttress of porcelaneous nacre, which ends abruptly towards the point of the columella, forming a tooth.

The columella, beveled off to a sharp edge, is pressed back on the umbilicus, which it completely closes, leaving only a central depression and a post-columellar furrow.