Oryzomys balneator Thomas, 1900 . Ann. Mag. Nat. Hist., ser. 7, 5:273.

TYPE LOCALITY: Ecuador, Napo-Pastaza Prov., upper Rio Pastaza, Mirador, 1500 m .

DISTRIBUTION: E and S Ecuador, N Peru.

SYNONYMS: hesperus.

COMMENTS: Relationships obscure; range extent uncertain.