Because the genus is monotypic, the description that follows applies both to the genus and species.
Shell composed of 5 whorls with a low spire; profile dome-shaped, broader than high, suture not impressed; whorls weakly rounded, periphery of immature shell strongly projecting, forming a keel; periphery spinose in early stages, but losing spination at maturity; mature shell with a subangulate base; axial sculpture of fine, raised lamellae; spiral sculpture of low, strongly beaded cords; cords between suture and beaded basal cord increasing from three in juvenile to 6 at maturity; base slightly convex, basal cords of comparable strength and beading to those of body whorl, increasing from three in juvenile to 8 at maturity; spiral sculpture of both body whorl and base separated by narrow interspaces; axial lamellae well
developed in interspaces but not expressed on surface of nodular beads; umbilicus open in juvenile shell, closed in male shell at basal diameter of 9 mm; remaining open in female shell; umbilicus of mature female shell bordered by raised, unbeaded peripheral cord that partially obstructs final quarter whorl and connects directly at base of aperture; aperture oblique, thickened within, descending slightly on final whorl; interior nacreous, inner wall of aperture of female shell smooth, edge with U-shaped sinus; shell colour brick-red.
Shell dimensions. Mature female shell: height 13.0, diameter 17.1 mm; immature male shell: height 4.9, diameter 9.1 mm; maximum dimensions possible for male shell unknown; immature female shell, height 5.9, diameter 9.1 mm. Juvenile shell not with raised axial lamellae, of low profile, exposing protoconch and early whorls in basal view; profile not equally bicarinate, the upper carination spinose and more strongly projecting than lower, non-spinose carination; protoconch and first teleoconch whorl positioned slightly below level of second whorl.
Operculum calcareous, thick, with a concavity at the base where the white outer surface is coloured light reddish-brown. There is a strong ridge and groove of similar width leading to
the upper part, which bears strong pustules in the region adjacent to the columella; outer edge with a narrow groove; inner surface becoming broadly paucispiral in final volution. This operculum is chipped or somehow reduced at its inner edge, to the extent that the outline is not oval.
Head-foot: Head proportionally large, provided anteriorly with a snout terminating in a broad, flattened area surrounding the mouth, laterally with two prominent, smooth bulges containing rather large, black eyes and, next to these on the anterior side, two slender, villose cephalic tentacles; cephalic lappets lacking. Neck lobes present, rather symmetrical, undi¬vided. Foot rather small, less than half the diametre of the shell when extended; each side of the epipodium provided in its anterior part with a cluster of three tentacles, the foremost on hardly more than a rounded bulge, the next two tapering and villose, hardly one-tenth of the cephalic tentacles in size; in the posterior part with two more tentacles similar in size and shape to the latter.
Radula strikingly symmetrical, with broad rachidian having lateral extensions, and moderately long, tapered overhanging cusps; with four pairs of similar lateral teeth, which are elbowed like the rachidian and extend above the shaft of the next tooth; shaft of fifth lateral tooth not in close contact with shaft of fourth lateral tooth; this tooth broad on both sides, with a less prominent cusp than those of the inner lateral teeth or any of the marginal teeth with longer cusps; outer marginal teeth with longer shafts, overhanging cusps shorter and deeply serrate on sides of the cusps.