MILLER AND REHN: NORTH AMERICAN MAMMALS. 67 
Onychomys melanophrys (Merriam). 
1889. Onychomys leucogaster melanophrys Merriam, North 
Amer. fauna, no. 2, p. 2. October 30, 1889. 
1890. 0\7iychomys'\ melanophrys Merriam, North Amer. 
fauna, no. 3, p. 61. September 11, 1890, 
Type locality. — Kanab, Kane Count}", Utah, 
Onychomys melanophrys pallescens Merriam. 
1890. Onychomys melanophrys p)allescens Merriam, North 
Amer. fauna, no. 3, p. 61. September 11, 1890. 
Ty"pe locality. — Moki Pueblos, Apache County, Arizona. 
Onychomys ramona Rhoads. 
1893. Onychomys ramona Rhoads, Amer. nat., xxvii, p. 833. 
September, 1893. 
Ty"pe loCxCLity. — San Bernardino Valley, California. 
Onychomys torridus (Coues). 
1874. Ilesperomys (yOyiychomys) torridus Proc. acad. 
nat. sci. Phila., p. 183. December 15, 1874. 
1885. Hesperomys torridus True, Proc. U. S. nat. mus., vii 
(1884), p. 597. 1885. 
1889. Onychomys torridus Merriam, North Amer. fauna, no. 
2, p. 3. October 30, 1889. 
Ta"pe locality. — Camp Grant, Graham County, Arizona. 
Onychomys torridus arenicola Mearns. 
1896. Onychomys torridus arenicola Mearns, Preliminary 
diagnoses of new mammals from the Mexican border of the 
United States, p. 3. May 25, 1896. (Reprint: Proc. U. S. 
nat. mus., xix, p. 139. December 21, 1896.) 
Type locality. — Rio Grande, about six miles above El Paso, 
El Paso County, Texas. 
Onychomys torridus perpallidus Mearns. 
1896. Onychomys torridus perpallidus Mearns, Preliminary 
diagnoses of new mammals from the Mexican border of the 
United States, p. 4. May 25, 1896. (Reprint: Proc. U. S. 
nat. mus., xix, p. 140. December 21, 1896.) 
Type locality. — Left bank of the Colorado River at monu¬ 
ment no. 204, Mexican boundary line, Yuma County, 
Arizona. 
