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 base is not umbilicated. The whorls are striate or granulate. The anal fasciole is submedian or below the middle. The slit is short.
According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus Perotrochus:
Perotrochus amabilis (Bayer, 1963)Perotrochus anseeuwi Kanazawa & Goto, 1991Perotrochus atlanticus Rios & Matthews, 1968Perotrochus deforgesi Métivier, 1990Perotrochus lucaya Bayer, 1965Perotrochus maureri Harasewych & Askew, 1993Perotrochus metivieri Anseeuw & Goto, 1995Perotrochus oishii (Shikama, 1973)Perotrochus quoyanus (Fischer & Bernardi, 1856)Perotrochus tosatoi Anseeuw, Goto & Abdi, 2005Perotrochus vicdani Kosuge, 1980Species brought into synonymyPerotrochus africanus (Tomlin, 1948): synonym of Bayerotrochus africanus (Tomlin, 1948)Perotrochus boucheti Anseeuw & Poppe, 2001: synonym of Bayerotrochus boucheti (Anseeuw & Poppe, 2001)Perotrochus caledonicus Bouchet & Metivier, 1982: synonym of Mikadotrochus caledonicus (Bouchet & Métivier, 1982)Perotrochus charlestonensis Askew, 1987: synonym of Bayerotrochus charlestonensis (Askew, 1988)Perotrochus diliculum Okutani, 1979: synonym of Bayerotrochus diluculum (Okutani, 1979)Perotrochus gotoi Anseeuw, 1990: synonym of Mikadotrochus gotoi (Anseeuw, 1990)Perotrochus hirasei (Pilsbry, 1903): synonym of Mikadotrochus hirasei (Pilsbry, 1903)Perotrochus indicus Anseeuw, 1999: synonym of Bayerotrochus indicus (Anseeuw, 1999)Perotrochus midas Bayer, 1965: synonym of Bayerotrochus midas (Bayer, 1965)Perotrochus poppei Anseeuw, 2003: synonym of Bayerotrochus poppei Anseeuw, 2003Perotrochus pyramus Bayer, 1967: synonym of Bayerotrochus pyramus (Bayer, 1967)Perotrochus tangaroanus Bouchet & Métivier, 1982: synonym of Bayerotrochus tangaroanus (Bouchet & Métivier, 1982)Perotrochus teramachii Kuroda, 1955: synonym of Bayerotrochus teramachii (Kuroda, 1955)Perotrochus westralis (Whitehead, 1987): synonym of Bayerotrochus westralis (Whitehead, 1987)
