RODENTIA: CRICETIDAE 531 



Type Locality. — Peterson's Ranch ("Sylvania"), Huachuca Mountains, 2 

 miles north of Sunnyside, Cochise County, Ariz. Altitude, 6,100 feet. Range. — 

 Known only from Huachuca Mountains in southeastern Arizona and Animas 

 Valley in southwestern New Mexico, but probably also occurring in suitable 

 habitats in adjacent area. 



Sigmodon ochrognathus madrensis Goldman and Gardnerf* 



1947. Sigmodon ochrognathus madrensis Goldman and Gardner, Journ. 



Mamm., vol. 28, No. 1, p. 58, Feb. 17, 1947. 

 Type Locality. — Foothills of Sierra Madre, about 30 miles northwest of Parral, 

 southern Chihuahua, Mexico. Altitude, 6,200 feet. Range. — Known only from 

 type locality in eastern foothills of Sierra Madre, southern Chihuahua, but may 

 have an extensive range in neighboring mountains of Sierra Madre Occidental 

 biotic province. Zonal range, Upper Austral. 



Sigmodon leucotis V. Bailey f * 



1902. Sigmodon leucotis V. Bailey, Proc. Biol. Soc. Washington, vol. 15, 

 p. 115, June 2, 1902. 



Type Locality. — Sierra de Valparaiso, Zacatecas, Mexico. Altitude, 8,700 

 feet. Range. — Sierra Madre of Durango and Zacatecas (Goldman and Gardner, 

 Journ. Mamm., vol. 28, No. 1, p. 59, Feb. 17, 1947). 



Sigmodon alticola alticola V. Bailey f* 



1902. Sigmodon alticola V. Bailey, Proc. Biol. Soc. Washington, vol. 15, 

 p. 116, June 2, 1902. 



Type Locality. — Cerro San Felipe, Oaxaca, Mexico. Altitude, 10,000 feet. 

 Range. — Mountains of Oaxaca. 



Sigmodon alticola amoles V. Baileyf * 



1902. Sigmodon alticola amoles V. Bailev, Proc. Biol. Soc. Washington, vol. 

 15, p. 116, June 2, 1902. 



Type Locality. — Pinal de Amoles, Queretaro, Mexico. Altitude, 7,000 feet. 

 Range. — Known from type locality only. 



Sigmodon planifrons Nelson and Goldman f * 



1933. Sigmodon planifrons Nelson and Goldman, Proc. Biol. Soc. Washington, 

 vol. 46, p. 197, Oct. 26, 1933. 



Type Locality. — Juquila, southwestern Oaxaca, Mexico. Altitude, 5,000 feet. 

 Range. — Known from type locality only. 



Genus NEOTOMODON 21 Merriam 

 1898. Neotomodon Merriam, Proc. Biol. Soc. Washington, vol. 12, p. 127, 

 Apr. 30, 1898. (Type, Neotomodon alstoni Merriam.) 



Neotomodon alstoni alstoni Merriamf * 



1898. Neotomodon alstoni Merriam, Proc. Biol. Soc. Washington, vol. 12, 



p. 128, Apr. 30, 1898. 

 1944. Neotomodon alstoni alstoni Davis, Journ. Mamm., vol. 25, No. 4, p. 



398, Dec. 12, 1944. 



41 For relationships, see Davis and Follansbee, Journ. Mamm., vol. 26, No. 4, pp. 405-407, 

 Feb. 12, 1945. 



