Odostomia occultidens

Odostomia occultidens, common name the hidden-toothed pyramid-shell, is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.

Description
The length of the shell measures 1.5 mm. The minute, white shell is translucent, shining, and smooth. The shell contains three whorls plus a prominent heterostrophe pullus. The adult whorls are rounded, regularly increasing. The aperture is ovately-pyriform. The columella is arched, thin, with a minute plication, rather above the centre, which is invisible from a front view.

Distribution
This species is found in the littoral zone and offshore off New South Wales, the Bass Strait and Tasmania