The large, thin shell is nearly destitute of
sculpture. It shows an unrecurved
columella, a short, wide, straight
siphonal canal, a wide shallow emargination representing the anal notch, and generally feeble anal fasciole, except in the very young. There is a sharp outer
lip, unarmed
aperture, and a sinusigera protoconch. The animal has a 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 are present and functional. The tentacles are low-seated, stout, and clavate. The
operculum is absent. The dentition resembles 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 siphonal canal, and in having a feebler type of verge, anal notch and fasciole. ==Species==