Oryzomys xantheolus Thomas, 1894 . Ann. Mag. Nat. Hist., ser. 6, 14:354.

TYPE LOCALITY: Peru, Piura Dept., Tumbez .

DISTRIBUTION: SW Ecuador to W Peru.

SYNONYMS: baroni, ica.

COMMENTS: Probable mainland relative of O. galapagoensis (Gardner and Patton, 1976; Patton and Hafner, 1983).