Pleurotomaria (Perotrochus) Fischer 1885 Perotrochus is a genus of large sea snails with gills and an operculum, marine gastropod mollusks in the family Pleurotomariidae, the slit snails, (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

The shell has a conical shape.

The whorls are striate or granulate.

The anal fasciole is submedian or below the middle.

[2] According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus Perotrochus:[3]