OCHOTONA. 



with one external and one internal salient angle. Body nearly tail- 

 less; toes, five in front; four behind with short nails; and there is a 

 prominent pad at base of each toe. 



Fig. 61. OCHOTONA PRINCEPS. 



No. 37 Field Columbian Museum Coll. Nat. size. 



Upper tooth row. Lower tooth row. 



Enlarged 5 times. Enlarged 5 limes. 



406. princeps. (/.epus), Richards, Zool. Jour., 1828, p. 520. 



Type locality. River of the mountains, or south branch of the 

 Mackenzie. 



Geogr. Distr. Rocky Mountains in British Columbia, northward 

 to south branch of the Mackenzie River. 



Genl. Char. Head yellowish brown; ears large, nearly round; 

 head broad, forehead arched; buUtc large. 



Color. Head and shoulders yellowish brown; rest of upper parts 

 grayish black; sides yellowish brown; under parts smoke gray tinged 

 on chest and parts of belly with brown. Ears bordered with white; 

 feet white, soles dusky brown. 



.^ft-asurements. Totallength, 172; hind foot, 27; ear, 25. 



407. schisticeps. {/.agomys), Merr, N. Am. Faun., No. 2, 18S9, p. 11. 

 Ty/re locality. Donner, California. 



Geogr. Distr. Sierra Nevada Mountains, California. 



