Perotrochus caledonicus is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.[1] [2]
The length of the shell varies between 30 mm and 55 mm.The type material that Perotrochus caledonicus is made of from southern New Caledonia typically has a smooth shell, but a more pustulose variation was later found and initially considered just a form of the same species. Collectors and dealers continue to distinguish between the "smooth" and "pustulose" forms, with some suggesting the latter might even qualify as a separate species.[3]
This marine species occurs off New Caledonia.