Granigyra pruinosa

Granigyra pruinosa is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.

Description
The size of the shell varies between 2.5 mm and 6.2 mm. The small, semitransparent shell is narrowly rimate. It is frosted by minute numerous white tubercles, which are partly embedded in the substance of the shell,. On one specimen there are slight spiral lines below the deep suture. The four whorls are swollen and rapidly increasing in size.

Distribution
This species occurs in European waters off Ireland, the Bay of Biscay and Portugal.