Sinezona semicostata

Sinezona semicostata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Scissurellidae, the little slit shells.

Description
The size of the shell varies between 0.5 mm and 0.7 mm.

Distribution
This species occurs in the Atlantic Ocean off the Canary Islands, Madeira and Cape Verde and in the Mediterranean Sea off Italy.