RODENTIA: HETEROMYIDAE 375 



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



vol. 39, p. 68, July 30, 1926. 

 Type Locality. — Magdalena Island, off west coast of Baja California, Mexico. 

 Range. — Magdalena Island. 



Perognathus arenarius ammophilus Osgoodf * 



1907. Perognathus penicillatus ammophilus Osgood, Proc. Biol. Soc. Wash- 

 ington, vol. 20, p. 20, Feb. 23, 1907. 

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



vol. 39, p. 68, July 30, 1926. 

 Type Locality. — Santa Margarita Island off west coast of Baja California, 

 Mexico. Range. — Santa Margarita Island. 



Perognathus arenarius siccus Osgoodf* 



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



vol. 20, p. 20, Feb. 23, 1907. 

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



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

 Type Locality. — Ceralbo Island, Gulf of California, Baja California, Mexico. 

 Range. — Known only from Ceralbo Island. 



Perognathus pernix pernix J. A. Allen* 



1898. Perognathus pernix J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 10, 

 p. 149, Apr. 12, 1898. 



Type Locality. — Rosario, Sinaloa, Mexico. Range. — Western Mexico from 

 Altata and Culiacan, Sinaloa, south at least to Acaponeta, Nayarit. 



Perognathus pernix rostratus Osgoodf* 



1900. Perognathus pernix rostratus Osgood, North Amer. Fauna No. 18, 

 p. 51, Sept. 20, 1900. 



Type Locality. — Camoa, Rio Mayo, Sonora, Mexico. Range. — Coast plains 

 of northern Sinaloa and southern Sonora, Mexico ; in Sonora, north to Tecoripa 

 (Burt, Univ. Michigan Mus. Zool. Misc. Publ. 39, p. 45, Feb. 15, 1938) . 



intermedins — group 



Perognathus intermedins intermedins Merriamf * 



1889. Perognathus intermcdius Merriam, North Amer. Fauna No. 1, p. 18, 

 Oct. 25, 1889. 



1889. Perognathus obscurus Merriamf, North Amer. Fauna No. 1, p. 20, 

 Oct. 25, 1889. (Camp Apache, Hidalgo County, N. Mex.) 



Type Locality. — Mud Spring, Mohave County, Ariz. Range. — Scattered 

 localities in Arizona south of Grand Canyon of Colorado River (Osgood, North 

 Amer. Fauna No. 18, p. 52, Sept. 20, 1900; Dice and Blossom, Carnegie Inst. 

 Washington Publ. 485, p. 28, 1937) ; north at least to Isleta, Bernalillo County, 

 in Rio Grande Valley (V. Bailey, North Amer. Fauna No. 53 (December 1931), 

 p. 282, Mar. 1, 1932) and to Carrizozo, Lincoln County, N. Mex. (Bradt, Journ. 

 Mamm., vol. 13, No. 4, p. 324, Nov. 2, 1932) ; southeast to Culberson County 

 (Davis and Robertson, Journ. Mamm., vol. 25, No. 3, p. 268, Aug. 14, 1942) and 

 to Brewster County (Alpine), Tex.; and souih to the city of Chihuahua in 

 central Chihuahua. Mexico. 



