Murex alatus Sowerby, 1834 Murex triformis Reeve, 1845 Pterochelus triformis is a species of sea snail, a marine gastropod mollusc in the family Muricidae, the murex snails or rock snails.

[1] This sea snail is generally white shading to brown.

The opening is shaped like an oval, with a complex series of channels extending throughout.

They are predatory, drilling holes into the shells of organisms such as clams and barnacles to feed.

This Muricidae-related article is a stub.