270 BULLETIN 79, UNITED STATES NATIONAL MUSEUM. 



t*Perognathus nelsoni nelsoni Merriam. 



1894. Perognathus (Chsetodipus) nelsoni Merriam, Proc. Acad. 

 Nat. Sci., Philadelphia, p. 266. September 27, 1894. 



Type Locality. — Hacienda La Parada, about 25 miles north- 

 west of the city of San Luis Potosi, State of San Luis Potosi, 

 Mexico. 



Kange. — Upper and lower Sonoran zone of central Mexico, cov- 

 ering the table-land from Inde, Durango, south to Lagos, 

 Jalisco, and east to Jaumave, Tamaulipas. 



t*Perognathus nelsoni canescens (Merriam). 



1894. Perognatlius (Chsetodipus) intermedins canescens Merriam, 



Proc. Acad. Nat. Sci. Philadelphia, p. 267. September 27, 



1894. 

 1900. Perognatlius nelsoni canescens Osgood, North Amer. 



Fauna, No. 18, p. 54. September 20, 1900. 

 Type Locality. — Jaral, State of Coahuila, Mexico. 

 Kange. — Known only from the type locahty. 



t*Perognathus goldmani Osgood. 



1900. Perognathus goldmani Osgood, North Amer. Fauna, No. 



'l8, p. 54. September 20, 1900. 

 Type Locality. — Sinaloa, State of Sinaloa, Mexico. 

 Eange, — Coast plains of northern Sinaloa and southern Sonora, 

 Mexico. 



t*Perognathus artus Osgood. 



1900. Perognathus artus Osgood, North Amer. Fauna, No. 18, 

 p. 55. September 20, 1900. 



Type Locality. — Batopilas, State of Chihuahua, Mexico. 

 Range. — Known only from a few scattered localities in western 

 Mexico. 



t*Perognathus fallax fallax Merriam. 



1889. Perognathus fallax Merriam, North Amer. Fauna, No. 1, 

 p. 19. October 25, 1889. 



Type Locality. — Reche Canyon, 3 miles southeast of Colton, 

 San Bernardino County, California. 



Range. — Extreme southwestern California, occupying the region 

 west of the San Bernardino and San Jacinto Ranges and ex- 

 tending south into northern Lower California. 



t*Perognathus fallax pallidus Mearns. 



1901. Perognathus fallax pallidus Mearns, Proc. Biol. Soc. 

 Washington, vol. 14, p. 135. August 9, 1901. 



Type Locality. — Mountain Spring, half way up the east slope 

 of the Coast Range Mountains, on the Mexican boundary line, 

 San Diego County, California. 



