Proechimys albispinus (I. Geoffroy, 1838) . Ann. Sci. Nat. Zool. (Paris), 10:125.

TYPE LOCALITY: Brazil, Bahfa, Ilha de Madre Deos, Itaparica (near Salvador) .

DISTRIBUTION: Bahfa and adjacent islands (Brazil).

SYNONYMS: serotinus.

COMMENTS: Subgenus Trinomys .