Reithrodontomys gracilis J. A. Allen and Chapman, 1897 . Bull. Am. Mus. Nat. Hist., 9:9.

TYPE LOCALITY: Mexico, Yucatan, Chichen-Itza .

DISTRIBUTION: N.W. Costa Rica to Chiapas and Yucatan (Mexico).

COMMENT: Includes insularis; see Jones, 1964, Proc. Biol. Soc. Wash., 77: 123-124. Subgenus Aporodon; see Hooper, 1952, Misc. Publ. Mus. Zool. Univ. Mich., 77:1 -255.

ISIS NUMBER: 5301410008047007001.