RODENTIA: GEOMYIDAE 327 



Type Locality. — San Martin Texmelucan, western Puebla, Mexico. Altitude, 

 7,400 feet. Range. — Elevated plains and lower slopes of hills in vicinity of type 

 locality. 



Thomomys umbrinus peregrinus Merriamf * 



1893. Thomomys peregrinus Merriam, Proc. Biol. Soc. Washington, vol. 8, 



p. 146, Dec. 29, 1893. 

 1915. Thomomys umbrinus peregrinus V. Bailey, North Amer. Fauna No. 39, 



p. 91, Nov. 15, 1915. 

 Type Locality. — Salazar, Mexico, Mexico. Altitude, 10,300 feet. Range. — 

 Upper slopes of Sierra de las Cruces, between Valley of Mexico and Valley of 

 Toluca, and neighboring parts of latter valley (Nelson and Goldman, Journ. 

 Marnm., vol. 15, No. 2, p. 108, May 15, 1934). 



Thomomys umbrinus tolucae Nelson and Goldmanf* 



1934. Thomomys umbrinus tolucae Nelson and Goldman, Journ. Mamm., vol. 

 15, No. 2, p. 109, May 15, 1934. 



Type Locality. — North slope, Volcan de Toluca, Mexico, Mexico. Altitude, 

 9,500 feet. Range. — Known from type locality only. 



Thomomys umbrinus vulcanius Nelson and Goldmanf* 



1934. Thomomys umbrinus vulcanius Nelson and Goldman, Journ. Mamm., 

 vol. 15, No. 2, p. 109, May 15, 1934. 



Type Locality. — Volcan de Popocatepetl, Mexico, Mexico. Altitude, 12,900 

 feet. Range. — Known only from near timberline on Volcan de Popocatepetl, 

 Mexico. 



Thomomys umbrinus albigularis Nelson and Goldmanf* 



1934. Thomomys umbrinus albigularis Nelson and Goldman, Journ. Mamm., 



vol. 15, No. 2, p. 106, May 15, 1934. 

 Type Locality. — El Chico, Sierra de Pachuca, Hidalgo, Mexico. Altitude, 



9,800 feet. Range. — Sierra de Pachuca, eastern Hidalgo. 



Thomomys umbrinus supernus Nelson and Goldmanf* 



1934. Thomomys umbrinus supernus Nelson and Goldman, Journ. Mamm., vol. 

 15, No. 2, p. 110, May 15, 1934. 



Type Locality. — Santa Rosa, about 7 miles northeast of Guanajuato, Guana- 

 juato, Mexico. Altitude, between 9,500 and 10,000 feet. Range. — High moun- 

 tains of central Guanajuato. 



Thomomys umbrinus pullus Hall and Villa 



1948. Thomomys umbrinus pullus Hall and Villa, Univ. Kansas Publ. Mus. 



Nat. Hist., vol. 1, No. 14, p. 251, July 26, 1948. 

 Type Locality. — Five miles south of Patzcuaro, Michoacan, Mexico. Altitude, 

 7,800 feet. Range. — Known only from 3 to 5 miles south of Patzcuaro. 



Thomomys umbrinus newmani Dalquest* 



1951. Thomomys umbrinus newmani Dalquest, Journ. Washington Acad. Sci., 

 vol. 41, No. 11, p. 361, Nov. 14, 1951. 



Type Locality. — Seven kilometers northwest of Palma (village 12 km. north- 

 west of Salinas), San Luis Potosi, Mexico. Range. — Known only from desert 

 plains near city of Salinas in western San Luis Potosi. 



