Shell small, brilliantly polished, light brown, with six whorls ex-clusive of the (lost) nucleus; suture distinct, closely appressed, un-dulated by the axial sculpture; anal fasciole constricted; spiral sculpture none; axial sculpture of (on the last whorl 10) rounded sigmoid ribs, feebler where they cross the fasciole, fading out on the base, and most prominent at the periphery, with subequal interspaces; aperture moderately wide, anal sulcus large, close to the suture, with a thick subsutural callus; outer lip thickened with no internal lirae, a knob-like varix a little way behind it; body and pillar callous, siphonal sulcus deep, canal wide, short, slightly recurved. Height of (decollate) shell. 9.5 mm; of last whorl, 7 mm: diameter, 4 mm.