Trochus kotschyi

Trochus kotschyi, common name the Kotschy's gibbula, is a species of sea snail, a marine gastropod mollusk in the subfamily Trochinae of the family Trochidae, the top snails.

Description
The size of the shell varies between 18 mm and 30 mm. The narrowly perforated shell has a conoidal shape. It is whitish-ashen, ornamented with undulating, oblique, radiating chestnut or blackish stripes. The spire is acute. The shell contains 7 whorls. The first whorl is eroded, the remainder are angulated and nodulose above. Above the carina the shell is obliquely nodulose, below the carina spirally lirate with 4 lirae. The body whorl is biangular, convex beneath, and has 7 concentric brown-spotted lirae. The aperture is subquadrate. The white columella is arcuate, sinuous, and below strongly truncate-dentate.

Distribution
This species occurs in the Persian Gulf and in the northwest Indian Ocean.