Howell — Nine New North American Pikas. 107 



averaging slightly smaller than that of princeps, the nasals narrower 

 posteriorly. 



Measurements— Type (adult 9): Total length, 180; hind foot, 28. 

 Skull: Occipito-nasal length, 41.3; zygomatic breadth, 20.4; breadth of 

 cranium, 17; interorbital breadth, 4.8; width of palatal bridge, 2.1; length 

 of nasals, 14.3. 



Remarks. — The Lemhi pika is most nearly related to ventorum, with 

 which it intergrades in southwestern Montana (Emigrant Peak, Park 

 County). A large series is available from the type locality, and smaller 

 series from Little Lost River Mountains, Ketchum, Stanley Lake, the head 

 of Wood River, and mountains east of Birch Creek, Idaho. 



Ochotona uinta nevadensis, subsp. nov. 



Type. — No. 94,213, U. S. National Museum, Biological Survey collec- 

 tion; adult female, skin and skull; from Ruby Mountains, southwest of 

 Ruby Valley P. O., Nevada, altitude 10,500 feet; collected June 21, 1898, 

 by Vernon Bailey; original number 6580. 



Subspecific characters. — Similar in worn winter pelage to uinta, but 

 distinctly paler, and sides of nose and face more extensively grayish. Com- 

 pared with cinnamomea: Color very much paler; skull larger, with much 

 broader palatal bridge and longer nasals. Compared with lemhi: Size 

 smaller; skull natter; nasals broader posteriorly. 1 



Color. — Type (in worn winter pelage): Upperparts mixed pinkish buff 

 and fuscous, darkest in the median line and on front of face; sides of nose 

 and face smoke gray; ears fuscous, margined with light buff; sides pinkish 

 buff; feet pale pinkish buff; soles drab; palms soiled buffy white; under- 

 parts grayish white, moderately washed with pinkish buff. 



Skull. — Closely similar to that of uinta, with long, wide nasals and broad 

 palatal bridge. 



Measurements. — Type (adult female): Total length, 200; hind foot, 32; 

 occipito-nasal length, 44.1; zygomatic breadth, 21.2; breadth of cranium, 

 18; interorbital breadth, 5.2; width of palatal bridge, 2.8; length of nasals, 

 14.5. 



Remarks. — The Ruby Mountains pika, as shown by its skull characters, 

 is most nearly related to uinta of the high mountains of eastern Utah, the 

 ranges of the two forms being separated by the Great Salt Lake Desert. 

 It is widely different from cinnamomea of the Beaver Mountains, the latter 

 being in the schisticeps group. At present the new form is known only 

 from two adults and one young specimen in worn winter pelage ; additional 

 material in fresh summer or fall pelage is needed before a complete descrip- 

 tion can be prepared. 



Ochotona saxatilis incana, subsp. nov. 



Type. — No. 128,914, U. S. National Museum, Biological Survey collec- 

 tion; y adult, skin and skull; from Pecos Baldy, New Mexico, altitude 12,000 

 feet; collected August 10, 1903, by Vernon Bailey; original number 8079. 



i Color differences not definable, through lack of comparable material. 



