NORTH AMERICAN RECENT MAMMALS. 345 



*Peromyscus difficilis difficilis — Continued. 



Range. — Sierra Madre from southwestern Chihuahua south 

 through Durango and Zacatecas, then east and southeast to 

 certain mountainous parts of Guanajuato and northern 

 Hidalgo, and thence north through parts of San Luis Potosi 

 to mountains of southern Coahuila. Chiefly in transition zone. 



t*Peromyscus difficilis amplus (Osgood) . 



1904. Peromyscvs amply s Osgood, Proc. Biol. Soc. Washington, 

 vol. 17, p. 62. March 21, 1904. 



1909. Peromyscus difficilis ampins Osgood, North Amer. Fauna, 

 No. 28, p. 181. April 17, 1909. 



Type Locality. — Coixtlahuaca, Oaxaca Mexico. 



Range. — Mountains of north central Oaxaca, Puebla, south- 

 eastern Vera Cruz, and southern Hidalgo. 



t*Peromyscus difficilis felipensis (Merriam). 



1898. Peromyscus felipensis Merriam, Proc. Biol. Soc. Washing- 

 ton, vol. 12, p. 122. April 30, 1898. 



1909. Peromyscus difficilis felipensis Osgood, North Amer. 

 Fauna, No. 28, p. 182. April 17, 1909. 



Type Locality. — Cerro San Felipe, Oaxaca, Mexico. Altitude, 

 10,200 feet. 



Range.— High elevations (8,000 feet to 11,000 feet) on the 

 mountains surrounding the Valley of Mexico; reappearing at 

 similar elevations in the mountains northeast of the city of 

 Oaxaca. 



t*Peromyscus bullatus Osgood. 



1904. Peromyscus hullatus Osgood, Proc. Biol. Soc. Washington, 



vol. 17, p. 63. March 21, 1904. 

 Type Locality. — Perote, Vera Cruz, Mexico. 

 Range. — Knovvn only from the type locality. 



melanophrys-growp. 



t*Peromyscus melanophrys melanophrys (Coues). 



1874. Hesperomys (Vesperimns) melanophrys Cottes,I*toc. Acad. 



Nat. Sci. Philadelphia, p. 181. December 15, 1874. 

 1885. Hesperomys melanophrys True, Proc. U. S. Nat. Mus., 



vol. 7, (1884) i p. .598. 1885. 

 1894. Peromyscus levcurus Thomas, Ann. and Mag. Nat. Hist., 

 ser. 6, vol. 14, p. 364. November, 1894. (Tehuantepec, 



Oaxaca, Mexico.) 

 1897. P[eromysci(s] melanophrys Allen, Bull. Amer. Mus. Nat. 



Hist., vol. 9, p. 51. March 15, 1897. 



