Anolacia mauritiana (Sowerby, 1830)

A species with a light-weight shell from the Western Indo-Pacific realm (Somali/Arabian province and Western Indian Ocean province).

It is often confused with Anolacia  aperta (Sowerby, 1825) which is similar but lacks the fine axial riblets on the body whorl, has a more polished, shinier shell and lacks the sharp constriction of the posterior aperture.