Shell small, thin, subglobose, white, keeled and widely umbilicate. Whorls 3,5 , rapidly increasing and loosely coiled, including a small smooth protoconch of one whorl, obliquely tilted, the apex immersed. Spire a little less than height of aperture. Sculpture consisting of a few equispaced rather sharp-crested prominent spiral keels, three on the spire whorls and eight on the body whorl, the fourth being at the suture and the remaining four on the base, the last one being at the edge of the umbilicus, which is deep and funnel-shaped, varying from about one-sixth to one-seventh the diameter of the shell. The distance from the suture to the first spiral keel is twice that of the intercarinate spaces, resulting in a broad flattened shoulder. There is no axial sculpture apart from faint growth lines. Aperture oblique subcircular. Peristome thin, adnatc to parietal wall for a very short space.
Height 1,6 mm.; diameter 1,5 mm. (Holotype).
Habitat: OfT Three Kings Islands, St. 933, 260 m.
This species resembles Fossarus brumalis, Hedley, 1907 (Proc. Linn. Soc. N.S.W., xxxil, p. 502), from 17 to 20 fathoms off Hope Islands, Queensland.