Oryzomys chapmani Thomas, 1898

Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, Mammal Species of the World (2 nd Edition), Washington and London: Smithsonian Institution Press, pp. 501-755 : 721

Oryzomys chapmani Thomas, 1898 . Ann. Mag. Nat. Hist., ser. 7, 1:179.

TYPE LOCALITY: Mexico, Veracruz, Jalapa, 4400 ft .

DISTRIBUTION: Cloud forest elevations of Cordillera Oriental (Tamaulipas to Veracruz), Sistema Montanosa (N Oaxaca), and Sierra Madre del Sur (S Oaxaca and Guerrero), Mexico.

SYNONYMS: caudatus , dilutior, guerrerensis , huastecae.

COMMENTS: Relegated to a subspecies of O. alfaroi by Goldman (1918). Goodwin (1969) recognized caudatus as distinct from O. alfaroi in N Oaxaca, but, as earlier arranged by Merriam (1901), O. chapmani has priority for this Mexican species. We view O. saturatior as the vicariant relative of O. chapmani (revision in progress). Karyotype reported, as O. caudatus , by Haiduk et al. (1979).