20 THE THIBETAN YAK CHAP. 
Oo 
The Yak, Bos grunniens, is a long-haired peculiar type, confined 
Fie. 168.—Yak. Bos grunniens. x 75. 
oO 
to the Thibetan plateau. &. (Anoa) depressicornis of Celebes is 
characterised by its straight horns; allied to it is B. mindorensis 
Fic. 169.—British Wild Ox. Bos tawrus. From Vaynol Park, Bangor. x 3). 
(Philippine Islands), supposed, however, to be a hybrid between 
