Shell large, thin, nearly destitute of sculpture, with an unrecurved pillar, a short, wide, straight canal, a wide shallow emargination repre-senting the anal notch, and generally feeble anal fasciole, except in the very young; a sharp outer lip, unarmed aperture, and Sinusigera nucleus.
Animal with the muzzle formed by a stout squarely truncated rostrum opening into a capacious pharynx, provided internally with a degenerate proboscis not capable of extrusion beyond the oral orifice, with a poison gland and a degenerate radula. Eyes present and functional; tentacles low-seated, stout, and clavate; operculum absent; dentition resembling that of Bela.
This form resembles Pleurotomella, Verrill, from which it differs in the character of the rostrum and pharynx, in the possession of eyes, in its straight wide canal, and in having a feebler type of verge, anal notch and fasciole.