504 On Mammals from Mantchuria. 



considerable as is the geographical distance between the two 

 localities. Externally the colour, ordinary presence of 

 frontal spots, and the proportions of the claws are alike in the 

 two series, while the skulls and teeth appear to be identical 

 in every detail. In size Mr. Howell^'s specimens are a little 

 smaller than those from Kliingan,but the typical skull in the 

 Puris Museum, which I have myself measured, is exactly as 

 in average specimens from the latter place. 



13. Lepus iimidus, L. 



? . Khingan, April 1908. 

 In changing pelage. 



14. Ochotona (Pika) hyj^erhorea mantchurica^ subsp. n. 



7 adult and 3 young specimens. Khingan. 



Most allied to 0. hyperhorea cinereo-fusca, Schrenck, of 

 which the Museum possesses a summer skin from the Kentei 

 Mts. and a winter one from the CJssuri, both collected by 

 Dorries. 



Size decidedly larger, the skulls uniformly larger than 

 those representing cinereo-fusca. 



In winter pelage (hair of back about 18 mm. in length) 

 the upper surface is near " broccoli-brown" of Ridgway, 

 becoming clearer grey on the head and fore back, and warmer — 

 near " claj^-colour" — on the rump. In an Ussuri specimen 

 in the same pelage the crown and back are washed with 

 russet-brown, only the nape being clearer grey. Under 

 surface dull whitish with a wash of clay-colour, the bases of 

 the hairs slaty as usual. 



Summer pelage (fur about 12 mm. in lengtli) between 

 " cinnamon^' and " russet," that of cinereo-fu$ca being nearly 

 true " russet." Sides and belly paler cinnamon, the latter 

 versrino- into " ochraceous buff.'" 



Dimensions of the type (measured in flesh) : — 



Head and body 178 mm. ; hind foot 28"5 ; ear 18. 



Skull: upper length 43*4; condyio-basal length 41; 

 greatest breadth 22 ; nasals 14*2 ; interorbital breadth 4'3 ; 

 breadth of brain-case 17; palatilar length 15"5; palatal 

 foramen 6'4 ; upper tooth-series (alveoli) 8*1. 



Type. "Male." Original number 23. Killed 18th May, 

 1908. 



These Pikas form an interesting series just covering the 

 change of pelage from the winter coat (specimen killed 

 18 May) to the summer (June 23), the other specimens 

 showing intermediate phases between the two. Our Dorries 



