280 BULLETIN 128, UNITED STATES NATIONAL MUSEUM. 



/ormostis-group . 



t*Perognathus formosus Merriam. 



1889. Perognathus formosus Mkrri AM, North Amer. Fauna, No, 1, 



p. 17. October 25, 1889. 

 Type Locality. — St. George, Washington County, Utah. 

 Range. — Southwestern Utah, southern Nevada, and the adjoin- 

 ing portion of CaUfornia. Lower Sonoran zone. 



Perognathus mesembrinus EUiot. 



1903. Perognathus mesembrinus Elliot, Field Columb. Mus., 



publ. 87, zool. ser., vol. 3, p. 251. December, 1903. 

 Type Locality.— Palm Springs, Riverside County, California. 



Subgenus CH^TODIPUS Merriam. 



1889. Chsetodipus Merriam, North Amer. Fauna, No. 1, p. 5. 

 October 25, 1889. Type, Perognathus spinatus Merriam. 



baileyi-grou-p. 



t*Perognathus baileyi baileyi Merriam. 



1894. Perognathus haileyi Merrl4.m, Proc. Acad. Nat. Sci. 



Philadelphia, p. 262. September 27, 1894. 

 Type Locality. — Magdalena, Sonora, Mexico. 

 Range. — South central Arizona and thence south into Sonora 



and northern Lower California. 



*Perognathus baileyi rudinoris Elliot. 



1903. Perognathus haileyi rudinoris Elliot, Field Columb. Mus., 



publ. 74, zool. ser., vol. 3, p. 167. April, 1903. 

 Type Locality.- — San Quintin, Lower Cahfornia, Mexico. 



t*Perognathus baileyi insularis Townsend. 



1912. Perognathus baileyi insularis Townsend, Bull. Amer. Mus. 



Nat. Hist., vol. 31, p. 122. June 14, 1912. 

 Type Locality. — Tiburon Island, Gulf of California, Sonora, 

 Mexico. 



* Perognathus knekus Elliot. 



1903. Perognathus IcneTcus Elliot, Field Columb. Mus., publ. 74, 



zool. ser., vol. 3, p. 169. April, 1903. 

 Type Locality. — Rosarito, San Pedro Martir Mountains, 

 Lower California, Mexico. 



hispidus-grovLTp . 



t* Perognathus hispidus hispidus Baird. 



1857. Perognathus hispidus Baird, Mamm. N. Amer., p. 421. 

 1885. Perognathus hispidus True, Proc. U. S. Nat. Mus., vol. 7 

 (1884), p. 599. 1885. 



