On new Bats and Rodents from S. America. 403 



some extent intermediates between tlie true cansa and the 

 subspecies next following. 



IS. Ochotona cansa viorosa, subsp. n. 



? . 4. Tai-pai-san, 45 miles S.E. of Feng-siang-£u, 

 Shen-si. 10,500'. 4th August, 1911. B.M. no. 12. 8. 5. 68. 



Size slightly greater than in typical cansa. Colour darker, 

 the hairs of the back more heavily blackened terminally. 

 Under surface with all the hairs broadly washed with dark 

 buffy, instead of, as in true cansa, only those of the middle 

 line being so coloured, the sides of the belly being whitish. 

 Hands and feet darker and more uniformly buify above and 

 more blackish below, the whitish fringes on eitiier side of the 

 feet, so marked in cansa, less developed and dull bufFy in 

 colour, so that practically the whole of the sole appears 

 sooty brown. 



ISkull with rather more strongly convex frontal outline, 

 broader interorbital space, larger brain-case, and broader 

 palatal bridge than in any of the specimens of true cansa. 

 In the type the projecting point representing the posterior 

 part of the septum of the palatal foramina is more developed 

 than usual, but this may be an individual peculiarity. 



Dimensions of the type: — 



Head and body 149 mm.; tail 8; hind foot 27; ear 18. 



Skull : greatest length 36 ; condylo-incisive length 34*3 ; 

 zygomatic breadth 18 ; nasals 11*2 x 4*4; interorbital breadth 

 4'1 ; breadth of brain-case 14'2 ; palatal bridge 2"6 ; upper 

 tootli-series (alveoli) 6*7. 



Hab. & Type as above. 



In its dull colour this Pika has some resemblance to the 

 0. tihetana of Sze-chwan, but is smaller, with larger bullae 

 and a more bowed frontal outline. Much more material is 

 needed before the true relationship to each other of tiiese 

 allied forms of Ochotona can be clearly understood. 



LII. — Neio Bats and Rodents from S. America. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 

 Ckceronycteris inca, sp. n. 



Nearly allied to Ch. minor, but the premolars shorter 

 (horizontally) and the molars longer. 



