Shell small, brown, shining, pyramidal. Whorls four, including a smooth, dome-shaped protoconch. The three adult whorls are encircled by two rounded keels, one at the suture and the other at the periphery. The upper one is at first smooth, but develops nodules, which give it a beaded appearance on the body whorl. The lower keel is itself divided by a narrow groove. On the base are three small keels. Aperture roundly-ovate, peristome continuous, pointed above, forming a flattened ring, whilst the opening itself is margined by a narrow, raised thread.
Length 1.5 mm Breadth 1 mm
Type, with twenty others, from 40 fathoms, off Thouin Bay.