228 BULLETIN 79, UNITED STATES NATIONAL MUSEUM.. 



Subgenus Lemmiscus Thomas (See page 400). 



*Lagurus curtatus (Cope). 



1868. Arvicola curtata Cope, Proc. Acad. Nat. Sci. Philadelphia, 



p. 2. 

 1885. Arvicola austerus curtatus True, Proc. U. S. Nat. Mus., 



vol. 7 (1884), p. 597. 1885. (Part.) 

 Type Locality. — ^Pigeon Spring, Mount Magruder, Nevada, 



near boundary between Inyo County, California, and 



Esmeralda County, Nevada. 

 Range. — ^Transition zone of the low mountain ranges in western 



Nevada and eastern California, east of the Sierra Nevada and 



north of Death Valley. 



Lagurus intermedius (Taylor). 



1911. Microtus (Lagurus) intermedius Taylor, Univ. Calif. 



Publ. ZooL, vol. 7, p. 253. June 24, 1911. 

 Type Locality. — Head of Big Creek, Pine Forest Mountains, 

 Humboldt County, Nevada. Altitude, 8,000 feet. 



t*Lagurus pallidus (Merriam). 



1888. A7'vicola (Chilotus) pallidus Merriam, Amer. Nat., vol. 



22, p. 704. August, 1888. 

 Type Locality. — Fort Buford, Howard County, North Dakota. 

 Range. — Transition prairies of western North Dakota, Montana, 



and as far north as Calgary, Alberta. 



t*Lagurus pauperrimus (Cooper). 



1868. Arvicola pauperriTna Cooper, Amer. Nat., vol. 2, p. 535. 



December, 1868. 

 Type Locality. — Plains of the Columbia, near the Snake 



River, southwestern Washington. 

 Range. — Eastern Washington and Oregon, central Idaho, and 



north slope of the Uinta Mountains, Utah, in transition zone. 



Genus PITYMYS McMurtrie.^ 



1831. Pitymys McMurtrie, Cuvier's Anim. Kingdom, Amer. 

 ed., vol. 1, p. 434. Type, Psammomys pinetorum LeConte. 



*Pitymys pinetorum pinetorum (LeConte). 



1830. Psammomys pinetorum LeConte, Ann. Lye. Nat. Hist. 

 New York, vol. 3, p. 133. 



1885. Arvicola pinetorum True, Proc. U. S. Nat. Mus., vol. 7 

 (1884), p. 596. 1885. (Part.) 



Type Locality. — Pine forests of Georgia, probably on the Le- 

 Conte plantation, near Riceboro, Liberty County. 



Range. — Georgia and the Carolinas. 



1 Revised by Bailey, North Amer. Fauna, No. 17, pp. 62-67, June 6, 1900. 



