SMALL MAMMALS FROM THE KACHIN PROVINCE. iJOr, 



brown". Colours in other respects quite the same. Tail appa- 

 rently longer, but the material of B. vestitus is deficient in this 

 respect. 



Skull in general shape as in vestims but larger throughout, and 

 more heavily ridged. Height decidedly greater. On the occipital 

 plane the lateral mastoid insets are in all cases very much larger. 



Dimensions of the type, measured in the flesh : — 



Head and body 380mm ; tail 95 ; hindfoot 51 ; ear 19. 



Skull, ma le type and female paratype, condylo-basal length 84.5, 

 81.5 condylo-incisive length 84, 80 ; zygomatic breadth 62, 

 57.5 ; mesial height of zygoma 8.5, 8.5 ; nasals 31 x 12.2, 29 x 11 ; 

 anteorbital, foramen 7x7, 7 x 6.5 ; greatest breadth on frontals 

 25 ; intertemporal breadth 10, 9.6 ; height of crown from alveolus 

 f m^ 38, 37 ; occipital plane, height from basion 30, 29.5 ; breadth 

 40.5, 38 ; mastoid inset on occipital plane 13 x 8.5, 12.8 x 7.8 ; palatal 

 foramina 6. 5, 6. 5 ; upper molar series (crowns) 15. 5, 16. 5. 



Hob. :— West flank of Imaw Bum at 9,000'. 



Type : — Adult, but not old male, the basilar suture still open. B. 

 M. No. 20. 8. 7. 15. Original number 23. Collected 25th October 1919, 

 by F. Kingdon Ward. The female skuU old, with closed basilar 

 suture. 



This fine animal, which I have great pleasure in naming after its 

 discoverer Mr. Kingdon Ward, is the largest member of the genus. 

 It is most closely allied to the Sze-chwan R. vestitus, but may be 

 distinguished by its greater size and different colour and the de- 

 tailed characters of its skull. The specimens in our series of 

 vestitus, are all precisely similar to one another in colour, while 

 among bheir skulls there are several with closed basilar sutures. 



(24) OCHOTONA ROYLEI, Ogilv. 



c? 10. Imaw Bum, 9,000— F. K. Ward. 



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