Oryzomys arenalis Thomas, 1913 . Ann. Mag. Nat. Hist., ser. 8, 12:571.

TYPE LOCALITY: Peru, Lambayeque Dept., Eten .

DISTRIBUTION: N.E. Peru.

COMMENT: Gyldenstolpe, 1932, Kongl. Svenska Vet.-Akad. Handl. Stockholm, 11 (3):27, placed arenalis in Oligoryzomys which was considered a subgenus by Gardner and Patton, 1976, Occas. Pap. Mus. Zool. La. St. Univ., 49:19; Cabrera, 1961:384, placed both taxa in subgenus Oryzomys .

ISIS NUMBER: 5301410008035007001.