Oryzomys alfari (J. A. Allen, 1897) . Bull. Am. Mus. Nat. Hist., 9:39.

TYPE LOCALITY: Costa Rica, Limon, Jimenez, 700 ft. (213 m) .

DISTRIBUTION: E. Honduras to Panama to N. Ecuador and W. Venezuela.

COMMENT: Formerly included in Nectomys; Gardner and Patton, 1976, Occas. Pap. Mus. Zool. La. St. Univ., 49:16- 17, placed alfari in Oryzomys (Sigmodontomys) . Corbet and Hill, 1980: 144, included alfari in russulus, without comment. Hall, 1981:623, considered alfari a distinct species. Includes russulus; see Cabrera, 1961:418, and Hershkovitz, 1970, J. Mammal., 51:791.

ISIS NUMBER: 5301410008025001001 as Nectomys alfari .