MILLER AND REHN : NORTH AMERICAN MAMMALS. 161 
* Perognathus penicillatus Wooclhouse. 
1852. Perogaathus penicillatus Woodlouse, Proc. acad. nat. 
sci. Pliila., VI, p. 200. 
1885. Perognathus penicillatus True, Proc. U. S. nat. mus., 
VII (1884), p. 599. 1885. 
Type locality. — San Francisco Mountain, Coconino County, 
Arizona. 
Perognathus penicillatus angustirostris Osgood. 
1900. Perognath us penicillatus angustirostris Osgood, North 
Amer. fauna, no. 18, p. 47. September 20, 1900. 
Type locality. — Carriso Creek, Colorado Desert, San Diego 
County, California. 
Perognathus penicillatus pricei (Allen). 
1894. Perognathus pricei Allex, Bull. Amer. mus. nat. hist., 
VI, 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. 
Perognathus penicillatus eremicus (Mearns). 
1898. Perognathus {CJtaetodipus) eremicus Mearxs, Bull. 
Amer. mus. nat. hist., x, p. 300. August 31, 1898. 
1900. Perognathus pe)iicillatus eremicus Osgood, North 
Amer. fauna, no. 18, p. 48. September 20, 1900. 
Type locality. — Fort Hancock, El Paso County, Texas. 
Perognathus Stephens! Merriam. 
1894. Perognathus (^(Jhaetodipus') stephensi Merriam, Proc. 
acad. nat. sci. Phila., p. 267. September 27, 1894. 
Type locality. — Mesquite Valley, northwest arm of Death 
Valley, Inyo County, California. 
Perognathus arenarius Merriam. 
1894. Perognathus arenarius Merriam, Proc. California acad. 
sci., 2d ser., iv, p. 461. September 25, 1894. 
Type locality.— San Jorge, near Comondu, Lower California, 
Mexico. 
Perognathus pernix Allen. 
1898. Perognatlius pernix Amer. mus. nat. hist., 
X, p. 149. Aiiril 12, 1898. 
Type locality. — Rosario, State of Sinaloa, Mexico. 
