374 U. S. NATIONAL MUSEUM BULLETIN 205 



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

 Range.- — Tiburon Island. 



Perognathus arenarius arenarius Merriamf* 



1894. Perognathus arenarius Merriam, Proc. California Acad. Sci., ser. 2, 



vol. 4, p. 461, Sept. 25, 1894. 

 1926. Perognathus arenarius arenarius Huey, Biol. Soc. Washington, vol. 39, 



p. 68, July 30, 1926. 

 Type Locality. — San Jorge, near Comondu, Baja California, Mexico. Range. — 

 Vizcaino Desert biotic province, Baja California (Goldman and Moore, Journ. 

 Maram, vol. 26, No. 4, p. 351, Feb. 12, 1946) . 



Perognathus arenarius sublucidus Nelson and Goldmanf* 



1929. Perognathus arenarius sublucidus Nelson and Goldman, Proc. Biol. Soc. 



Washington, vol. 42, p. 109, Mar. 25, 1929. 

 Type Locality. — La Paz, Baja California, Mexico. Range. — Desert lying 



about southwestern part of La Paz Bay, Baja California. 



Perognathus arenarius ambiguus Nelson and Goldmanf* 



1929. Perognathus arenarius ambiguus Nelson and Goldman, Proc. Biol. Soc. 



Washington, vol. 42, p. 108, Mar. 25, 1929. 

 Type Locality. — Yubay, 30 miles southeast of Calamahue, Baja California, 



Mexico. Altitude, 2,000 feet. Range. — Central section from San Fernando 



south to Vizcaino Desert, the region of perhaps most extreme aridity in Baja 



California. 



Perognathus arenarius helleri Elliot* 



1903. Perognathus helleri Elliot, Field Columb. Mus. Publ. 74, Zool. Ser., 



vol. 3, No. 10 (April) , p. 166, May 7, 1903. 

 1926. Perognathus arenarius helleri Huey, Proc. Biol. Soc. Washington, vol. 



39, p. 68, July 30, 1926. 

 Type Locality. — San Quintin, northwestern Baja California, Mexico. 

 Range. — Northwest coast of Baja California. 



Perognathus arenarius mexicalis Huey 



1939. Perognathus arenarius mexicalis Huey, Trans. San Diego Soc. Nat. 

 Hist. vol. 9, No. 13, p. 57, Aug. 31, 1939. 



Type Locality.— Los Muertos Canyon fan, lat. 32°27' N., long. 115°53' W., in 

 palo verde ironwood association at GaskilPs Tank, near Laguna Salada, north- 

 ern Baja California, Mexico. Range. — As far as known, at two localities not 

 far apart on western side of Laguna Salada. 



Perognathus arenarius albescens Huey* 



1926. Perognathus arenarius albescens Huey, Proc. Biol. Soc. Washington, 

 vol. 39, p. 67, July 30, 1926. 



Type Locality. — San Felipe, Baja California, Mexico. Range. — As far as 

 known, sandy area bordering San Felipe Bay, northeastern Baja California. 



Perognathus arenarius albulus Nelson and Goldmanf* 



1923. Perognathus penicillatus albulus Nelson and Goldman, Proc. Biol. Soc. 

 Washington, vol. 36, p. 159, May 1, 1923. 



