ree BANGS — TWO NEW PIKAS 41 
palms buff; ears with a conspicuous white border, buffy on outside near base, 
dusky toward top, on inside grayish with a dusky band just below white 
border. 
Three younger topotypes are similar, except that the tawny of neck and 
sides is paler—rather more yellowish — and the belly grayer. They are in 
fresh pelage and differ from examples of O. m/imus, of equal ages and in 
corresponding pelage, in being paler in general color, less sooty, and more 
suffused with pale tawny ochraceous. 
Measurements.—Type, & adult: total length, 190; hind foot, 30 mm.; no. 
7390, young @, topotype, (nearly full grown?): total length, 173; hind foot, 
30 mm. 
Skull, type, d adult: basal length, 37.4; occipitonasal length, 43.4; zygo- 
matic width, 22.6; width across audital openings, 21.6; interorbital width, 
5.; length of nasals, 13.8; width of nasals, 5.4; length of single half of 
mandible, 29.2 mm. 
Remarks.— O. cuppes is more nearly related to O. minimus of the 
Cascade Mountains of British Columbia than to any other form. 
Their skulls are similar, but in color they differ considerably, O. 
cuppes being much lighter brown, less sooty, and much suffused 
with rich tawny ochraceous. 
Ochotona saxatilis' sp. nov. 
Tye, from Snowy Range, Montgomery, Park Co., Colorado, (taken near the 
limit of trees); ¢@ adult, no. 2703, coll. of Museum of Comparative Zoology, 
Cambridge, Mass., collected July 27, 1871, by the Museum of Comparative 
Zoology Expedition to the Rocky Mountains; original no. 945. 
General characters.— Size large; general color pale, much suffused with buff 
and yellowish brown; skull large and long, wide between orbits; nasals and 
rostrum very long; palatine fossa long and narrow; palatal bridge narrow, 
its anterior edge falling far back. 
Color.— Base of fur everywhere slate gray; upper parts pale yellowish brown 
to light grayish brown, somewhat grizzled by the admixture of blackish-tipped 
hairs on top of head and along back; cheeks, sides of neck and lower sides 
much suffused with buff and pale ochraceous; hairs behind ear usually buff, 
sometimes ochraceous; under parts buffy white to strong buff; under surface 
of neck deep buff to pale ochraceous; upper surface of feet and hands buff; 
palms buff; soles dusky brown; ear with a narrow, yellowish white border, 
inside grizzled gray, outside buffy at base, then dusky. The type is an almost 
uniform pale ochraceous, slightly darkened on head and along back by the 
1 Saxatilis — that dwells among rocks. 
