Marmosa Gray, 1821 . London Med. Repos., 15:308.

TYPE SPECIES: Didelphis marina Gray, 1821, by monotypy (incorrect subsequent spelling of Didelphis murino Linnaeus, 1758).

SYNONYMS: Asagis Gloger, 1841; Cuica Liais, 1872; Grymaeomys Burmeister, 1854; Notagogus Gloger, 1841; Opossum Schmid, 1818 (part); Sarigua Muirhead, 1819 (part); Stegomarmosa Pine, 1972 .