Oryzomys concolor (Wagner, 1845) . Arch. Naturgesch., 1 1 (1):147.

TYPE LOCALITY: Brazil, Amazonas, Rio Curicuriari, below Sao Gabriel .

DISTRIBUTION: S.C. Costa Rica to Guianas, Brazil, N. Bolivia, and Peru; N. Argentina (AL); Trinidad.

COMMENT: Includes helvolus, mamorae, marmosurus, melleus, mincae, osgoodi, roberti, tectus, trinitatis, and vicencianus; subgenus Oecomys; see Hershkovitz, 1960, Proc. U.S. Nat. Mus., 110:545-559, Husson, 1978:406, Hall, 1981:619, and Voss and Linzey, 1981, Misc. Publ. Mus. Zool. Univ. Mich., 159:13. Gardner and Patton, 1976, Occas. Pap. Mus. Zool. La. St. Univ., 49:20, 41, considered Oecomys a distinct genus. Reviewed by Massoia and Fornes, 1965, Physis, 25(70):319-324.

ISIS NUMBER: 5301410008035037001 as O. mamorae .

5301410008035038001 as O. marmosurus .

5301410008035041001 as O. melleus .

5301410008035043001 as O. mincae . -

5301410008035049001 as O. osgoodi .

5301410008035055001 as O. roberti .

5301410008035061001 as O. tectus .

5301410008035063001 as O. trinitatis .