Alvania versoverana
Alvania versoverana is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Description
The length of the shell attains 2.2 mm.The small, delicate shell is ovate-oblong and semi-translucent. It contains six ventricose whorls, adpressed to the sutures. The sculpture consists of longitudinal, slightly oblique ribs. They almost cease to exist at the base of the body whorl. The shell has a delicate transverse liration. The aperture is round. The outer lip is thin and simple.