Order Rodentia - Family Muridae Author Guy G. Musser Author Michael D. Carleton text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 501 755 book chapter http://doi.org/10.5281/zenodo.7353098 1-56098-217-9 7353098 Sigmodon ochrognathus Bailey, 1902 . Proc. Biol. Soc. Washington , 15:115 . TYPE LOCALITY: USA , Texas , Brewster Co., Chisos Mountains, 8000 ft . DISTRIBUTION: SE Arizona , extreme SW New Mexico , and Transpecos, Texas , USA , south to C Durango , Mexico . Northern outlier population may persist in Guadalupe Mtns, Transpecos, Texas (see Stangl and Dalquest, 1991 ). SYNONYMS: baileyi , madrensis , montanus . COMMENTS: See Baker and Shump (1978b , Mammalian Species, 97).