Alvania lactea

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

Description
The length of the shell varies between 4 mm and 8 mm.

The thin shell is subtranslucid to opaque. It is feebly longitudinally and spirally closely costellate. The color is yellowish white or white. The shell contains 5-6, subconvex whorls with linear suture. The outer lip is scarcely thickened externally.

Distribution
This species occurs in the North Sea; also off Morocco and in the Black Sea; in the Mediterranean Sea off Greece.

Fossils were found in Pleistocene-Pliocene strata in the Netherlands and Pleistocene strata near Saint-Malo, France.