

166 



ONYCHOMYS. 



FIG. 32. ONYCHOMYS TORRIDUS. 



No. 701 Field Columbian Mus. Coll. Twice nat. size. 



UPPER TOOTH ROW. LOWER TOOTH ROW. 



Enlarged 10 times. Enlarged 10 times. 



123. melanophrys (Onychomys), Merr., N. Am. Faun., No. 2, i< 



p. 2, and No. 3, 1890, p. 61. Elliot, Syn. N. Am. Mamm., 

 1901, p. 120. 

 BLACK-BROWED MOLE MOUSE. 



Type locality. Kanab, Kane County, Utah. 



Geogr. Distr. State of Sonora, Mexico, north to Utah. 



Genl. Char. Size of O. leucogaster ; ear a little smaller; hind foot 

 densely furred to base of toes. 



Color. Above rich tawny cinnamon, well mixed with black- 

 tipped hairs on the back, and brightest on the sides; a distinct black 

 ring around the eye, broadest above. "This ring is considerably 

 broader and more conspicuous than the very narrow ring of leuco- 

 gaster." 



Measurements. Total length, 154; tail, 41; hind foot, 21; ear 

 from crown, 10. Skull: Hensel, 22.3; zygomatic breadth, 15.4; 

 interorbital constriction, 5.2; length of nasals, 10.7; length of upper 

 molar series, 4.8; length of mandible, 15.7. (Merr., 1. c.) 



a. pallescens (Onychomys}, Merr., N. Am. Faun., No. 3, 1890, 

 p. 61. Elliot, Syn. N. Am. Mamm., 1901, p. 121. 



