Oryzomys dimidiatus (Thomas, 1905) . Ann. Mag. Nat. Hist., ser. 7, 15:586.

TYPE LOCALITY: Nicaragua, Zelaya Dept., Rio Escondido, 7 mi below Rama .

DISTRIBUTION: SE Nicaragua.

COMMENTS: Described as a species of Nectomys and included therein as incertae sedis by Hershkovitz (1944). Later designated as the type species of Micronectomys, subgenus Oryzomys, by Hershkovitz (19486), who afterwards (1970b) acknowledged the taxon as an nomen nudum (also see Pine and Wetzel, 1975:653). Morphological features resemble those of the O. couesi-palustris complex (Hershkovitz, 1970b). Only two specimens known (see Jones and Engstrom, 1986).