Shell small, subperforate, ovate, thin, translucent, very glossy, rather flattened. Colour brown. Whorls five, rapidly increasing, separated by an impressed suture. Last whorl disproportionately large, comprising three-quarters of the whole shell, bulging at the periphery, rapidly and deeply descending for the last half whorl. The earlier whorls are distantly, spirally grooved, the later are quite smooth. The translucency of the shell presents by optical illusion a subsutural band. The strangled aperture is nearly perpendicular, regularly oval, bevelled and thickened within. Length, 3.68 mm.; breadth, 2.32 mm.
Hab.—The half dozen examples seen were handed to me for description by Mr. J. Brazier. He procured them from drifted mangrove leaves on the beach at Bowen, Queensland.