Micoureus demerarae (Thomas, 1905) . Ann. Mag. Nat. Hist., ser. 7, 16:313.

TYPE LOCALITY: Guyana, East Demerara-West Coast Berbice, "Comaccka, 80 miles up Demerara River."

DISTRIBUTION: Colombia, Venezuela, French Guiana, Guyana, Surinam, Brazil, and E Paraguay.

SYNONYMS: areniticola Tate, 1931; cinerea Temminck, 1824; domina Thomas, 1920; esmeraldae Tate, 1931; limae Thomas, 1920; meridae Tate, 1931; paraguayana Tate, 1931; pfrimeri Miranda-Ribeiro, 1936; travassosi Miranda-Ribeiro, 1936.

COMMENTS: Previously known as Marmosa cinerea; cinerea preoccupied by D. cinerea Goldfuss, 1812 .