Shell small, solid, chalky with an olivaceous periostracum, decollate with about four and a half remaining whorls; suture obscure, with a narrow slightly elevated band in front of it, and on the last whorl a gradually developing similar band behind it; in front of the first band is a depression with two or three incised spiral lines, followed by a strong nodulous keel corresponding to the anal fasciole, in front of which again are (on the spire one, on the last whorl four) strong, simple, distant, spiral threads, of which the second is strongest and followed by the widest interval, the series preceded by eight or ten smaller, closer, simple, spiral threads which extend to the end of the canal; axial sculpture of incremental lines and on the earlier whorls obscure wrinkles connected with the nodules on the keel, which number on the penultimate whorl about twenty-four and on the last whorl become obsolescent; aperture short, lunate; outer lip sharp, with a well marked sulcus at the principal keel; body with the sculpture erased; pillar very short, twisted, obliquely truncate in front; axis not pervious; canal short, recurved, with flaring edges, Length of three whorls, 8mm; of last whorl, 6mm; of aperture, 4mm; max. diam. 5 mm. Operculum small, narrow, pale brown, nucleus apical.

Gulf of Panama. Also near Galapagos archipelago.