Alvania salebrosa

Alvania salebrosa is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.

Description
The length of the shell attains 2.6 mm, its diameter 1.6 mm.

The thick, somewhat shining, brownish shell is depressed conical. It shows 10-12 strong, close, rounded ribs, subnodose at the suture, and on the angulated periphery of the body whorl. The shell contains 5½ flattened whorls that are rapidly increasing.

Distribution
This marine species occurs off Sydney, Australia.