268 BULLETIN 79, UNITED STATES NATIONAL MUSEUM. 



f*Perognathus penicillatus angustirostris Osgood. 



1900. Perognathus penicillatus angustirostris Osgood, Nortli 



Amer. Fauna, No. 18, p. 47. September 20, 1900. 

 Type Locality. — Carriso Creek, Colorado Desert, Imperial 



County, California. 

 Eange. — Colorado Desert; south to northern Lower California 



and east to the Colorado River and southwestern Arizona, where 



it meets the range of pencillatus and pricei. Lower Sonoran 



zone. 



*Perognathus penicillatus pricei (Allen). 



1894. Perognathus pricei Allen, Bull. Amer. Mus. Nat. Hist., 



vol. G, p. 318. November 7, 1894. 

 1900. Perognathus penicillatus pricei Osgood, North Amer. 



Fauna, No. 18, p. 47. September 20, 1900. 

 Type Locality. — Oposura, State of Sonora, Mexico. 

 Range. — South central Arizona and northwestern Mexico, west of 



the Sierra Madre. 



t*Perognathus penicillatus eremicus (Mearns). 



1898. Perognathus {Chsetodipus) eremicus Meabns, Bull. Amer. 

 Mus. Nat. Hist., vol. 10, p. 300. August 31, 1898. 



1900. Perognathus penicillatus eremicus Osgood, North Amer. 

 Fauna, No. 18, p. 48. September 20, 1900. 



Type Locality. — Fort Hancock, El Paso County, Texas. 



Range. — Extreme western Texas, thence south into north cen- 

 tral Mexico east of the Sierra Madre at least to La Ventura, 

 Coahuila. 



t*Perognathus penicillatus ammophilus Osgood. 



1907. Perognathus penicillatus ammophilus Osgood, Proc. Biol. 



Soc. Washington, vol. 20, p. 20. February 23, 1907. 

 Type Locality. — Margarita Island, Lower Cahfornia, Mexico. 



t*Perognathus penicillatus siccus Osgood. 



1907. Perognathus penicillatus siccus Osgood, Proc. Biol. Soc. 



Washington, vol. 20, p. 20. February 23, 1907. 

 Type Locality. — Ceralbo Island, Lower California, Mexico. 



t*Perognathus penicillatus seri Nelson. 



1912. Perognathus penicillatus goldmani Townsend, Bull. Amer. 



Mus. Nat. Hist., vol. 31, p. 122. June 14, 1912. Not of 



Osgood, 1900. 

 1912. Perognathus penicillatus seri Nelson, Proc. Biol. Soc. 



Washington, vol. 25, p. 116. June 29, 1912. (Substitute for 



goldmani Townsend.) 

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



