Shell small, elongate, smooth and polished, without sculpture, even on neck, which lacks the characteristic spiral grooves. Whorls 4 ½, including a papillate smooth protoconch of 1 ½ whorls. Spire slightly taller than aperture. Whorls evenly arcuate, suture impressed. Outer lip scarcely thickened, but with a distinct shallow subsutural sinus. Colour light golden and reddish-brown, patterned on a white ground. Pattern variable; the holotype has the protoconch and first whorl light reddish-brown; succeeding whorls with a subsutural collar of reddish-brown blotches and an interrupted narrow band of the same colour as well as a diffused general pattern of horizontal to slightly oblique streaks of light brown and pale grey; the whole of the base is almost uniformly light golden-brown. Aperture whitish within, except over the lower third, where the basal colour shows through.

Height, 3·3 mm.; diameter, 1·35 mm. (holotype).
Holotype in Auckland Museum.
Locality: Tom Bowling Bay, Northern N.Z. (in shell-sand).

The species is characterised by its slender simple outlines and the total absence of grooves on the neck.