Not stated. Probably shallow water. [details]
Pacific Ocean: Baja California Sur (Gulf of California, Mexico). [details]
The specific epithet mexicanus refers to the type locality of the species, Mexico (Baja California Sur, Gulf of ... [details]
On shells of molluscs, probably at shallow water. [details]
Baja California, western Mexico, Pacific Ocean. Specimens collected in two different localities of the Gulf of ... [details]
Coves near "Corumel" [= probably El Coromuel Beach], La Paz, Mexico, Gulf of California (gazetteer estimate ... [details]
Rioja (1947: 212) refers that the type is deposited in the collections of the Instituto de Biología of the ... [details]