the Li-Kt'a?hf Ra)u/e, Yunnan. G63 



Amoiio- tlio soverul closely iiUied species of the thibetana 

 group this Pika stands out by its comparatively large size, 

 its giey nape, convex skull, and the absence oF the posterior 

 broadening- of the palatal foianiina so marked in the other 

 forms. In all probability it does not occur exactly on the 

 same ground as 0. thibetana, although living at about the 

 same altitude on the same range. 



Named in honour of Mr. George Forrest, to whose abilities 

 the two valuable Yunnan collections are due, and who has 

 taken great interest in his mammal work. 



While naming this Pika, I have again examined the 

 Omi-san specimen obtained by Mr. Malcolm Anderson in 

 1910, and then referred to 0. thihetana. It is, however, so 

 different in colour to the ordinary thihetana that, now we 

 have seen a much larger number of specimens of the latter, I 

 may venture to give it a special subspecific name : — 



Ochotona thihetana sacraria^ subsp. n. 



General characters of thihetana^ but the back of a reddish- 

 brown colour, between cinnamon and cinnamon-brown, this 

 colour being apparently due to the light rings on the hairs 

 being dark ochraceous instead of drabby. On the sides the 

 tone is more uniform and more cinnamon. Nape with no 

 evident nuehal mantle or patch. 



Skull as in thihetana, but rather flatter, and there is no 

 trace of the minute postorbital projections usually present in 

 that animal. 



Dimensions of the type (measured in flesh) : — 



Head and body 149 mm. ; hind foot 28 ; ear 18*5. 



Skull : greatest length 36'7 ; condylo-incisive length 34 ; 

 nasals 11*6 ; palatal foramina 9'8 X 4*8 ; length of bulla 8 ; 

 upper tooth-series 7'2. 



Hah. Mt. Omi-san, Omi-hsien, S. Sze-chwan. Alt. 9500'. 



Type. Adult male. B.M. no. 11. 2. 1. 258. Original 

 number 2525. Collected 17th August, 1910, by M. P. 

 Anderson. Presented by the Duke of Bedford, K.G. 



31. Ochotona thihetanaj M.-Edw. 

 c^. 2644, 2709; ? . 2592, 2599, 2640. 13,000-16,000'. 



