Shell medium size, fairly robust, melanioid, with yellowish brown periostracum. Protoconch as in D. spinosa, perhaps with 1 or 2 more spiral ribs. The teleoconch of the holotype has slightly more than 6 whorls of slowly increasing diameter, but at least 1.5 whorls are lost by corrosion. The most apical whorls closely resemble those of D. spinosa and are dominated by a strong keel which gives the whorls a strongly angulated appearance and forms short spines where it crosses the axial ribs. On the second or third whorl the keel becomes less dominating and additional spiral ribs appear. The body-whorl has 4 or 5 spiral ribs, which form blunt, low tubercles at the intersections with the axial ribs, here numbering about 16 per whorl. On the body-whorl, there are 4 additional spiral ribs on the basal surface. The most apical of these is just barely concealed
under the suture and forms an abrupt end to the axial ribs. In addition to this sculpture, the surface is covered by fine, irregular incremental lines and the periostracum has a fine spiral sculpture of about 50 lines per mm. The aperture is elongate and its anterior corner rounded, flattened and forming a shallow canal. Dimensions. Height of holotype 6.1 mm, maximum height about 8.5 mm. Operculum. As in D. spinosa, but yellowish-brownish.Radula : The marginal teeth are broad, flat and rake-like with about 12 apical denticles. The lateral tooth has about four denticles on each side of the main cusp. The central tooth is broad, with 2 cusps on each side of the main cusp.