Aoteatilia psila

(Original description) The very small, white shell is fusiform, thin, almost smooth, but the base is distinctly spirally striate The sculpture: Excessively fine microscopic striae are present on all whorls, those of the protoconch excepted, crossed by fine dense straight growth lines.

The body whorl shows broad flat equidistant about 20 spiral ribs with narrow linear interstices.

The protoconch consists of 1½ smooth and polished whorls, the nucleus broadly rounded.

The aperture is slightly oblique, high and narrow, its sides subparallel, angled above, with a short broad and truncated siphonal canal below.

[2] This marine species is endemic to New Zealand and occurs off Three Kings Islands and Northland.