RODENTIA: CRICETIDAE 457 



Michoacan, Morelos, and Jalisco. Known range from Volcan Popocatepetl, 

 Monte Rio Frio, and other mountains bounding Valley of Mexico west, inter- 

 ruptedly, to El Nevado de Colima, extreme southeastern Jalisco. Known vertical 

 range from 9,300 feet at San Mateo, near city of Mexico, to about 12,200 feet 

 on Volcan de Toluca. (Hooper, Univ. Michigan Mus. Zool. Misc. Publ. 77, 

 p. 87, Jan. 16, 1952) . 



Reithrodontomys chrysopsis perotensis Merriamf * 



1901. Reithrodontomys perotensis Merriam, Proc. Washington Acad. Sci., 



vol. 3, p. 550, Nov. 29, 1901. 

 1901. Reithrodontomys orizabae Merriamf, Proc. Washington Acad. Sci., vol. 

 3, p. 550, Nov. 29, 1901. (Volcan de Orizaba, Puebla, Mexico. Altitude, 

 9,500 feet.) 

 1952. Reithrodontomys chrysopsis perotensis Hooper, Univ. Michigan Mus. 



Zool. Misc. Publ. 77, p. 89, Jan. 16, 1952. 

 Type Locality. — Cofre de Perote, Veracruz, Mexico. Altitude, 9,500 feet. 

 Range. — Known only from elevations above 9,500 feet on Cofre de Perote, Vera- 

 cruz, and Volcan de Orizaba, Veracruz and Puebla (Hooper, loc. cit.) . 



fulvescens — group 

 Reithrodontomys fulvescens fulvescens J. A. Allen* 



1894. Reithrodontomys mexicanus fulvescens J. A. Allen, Bull. Amer. Mus. 

 Nat. Hist., vol. 6, p. 319, Nov. 7, 1894. 



1895. Reithrodontomys fulvescens J. A. Allen, Bull. Amer. Mus. Nat. Hist., 

 vol. 7, p. 138, May 21, 1895. 



Type Locality. — Oposura, Sonora, Mexico. Altitude, 2,000 feet. Range. — 

 Arid plains and mountains of southeastern Arizona and eastern half of Sonora, 

 north of Rio Mayo. Known geographic range from vicinity of Tucson, Ariz., 

 south to vicinity of Macori, Sonora. Vertical range from 2,000 feet at Oposura, 

 Sonora, to 5,300 feet in Huachuca Mountains, Ariz. (Hooper, Univ. Michigan 

 Mus. Zool. Misc. Publ. 77, p. 94, Jan. 16, 1952) . 



Reithrodontomys fulvescens canus Benson* 



1939. Reithrodontomys fulvescens canus Benson, Proc. Biol. Soc. Washing- 

 ton, vol. 52, p. 149, Oct. 11, 1939. 



Type Locality. — Five miles southeast of Chihuahua, Chihuahua, Mexico. Al- 

 titude, 5,750 feet. Range. — Northern part of Mexican Plateau in Durango, 

 Coahuila, and Chihuahua, and western Texas. Known geographic range from 

 Davis Mountains, Tex., and vicinity of city of Chihuahua south to latitude of 

 Gomez Palacio, Durango. Vertical range from 3,800 feet at San Juan, Durango, 

 to 6,650 feet near Zarca, Durango (Hooper, Univ. Michigan Mus. Zool. Misc. 

 Publ. 77, p. 97, Jan. 16, 1952). 



Reithrodontomys fulvescens intermedius J. A. Allen* 



1895. Reithrodontomys mexicanus intermedius J. A. Allen, Bull. Amer. Mus. 

 Nat. Hist., vol. 7, p. 136, May 21, 1895. 



1896. Reithrodontomys laceyi J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 8. 

 p. 235, Nov. 21, 1896. (Watson's Ranch, 15 miles south of San Antonio, 

 Bexar County, Tex.) 



