PREHISTORIC TIMES IN BRITAIN. 



is straight, and not convex backwards ; the portion of the frontal which is bounded in- 

 ternally by the supraorbital channel, and externally by the lachrymal bone, is markedly 

 convex. The nasals are broader, as is nearly always the case, and shorter also, which 

 is not by any means always the case, relatively to the fronto-parietal region of the 

 vertex, than in Sus scrofa, var. ferus. 



Measurements of Indian Wild Boar, No. 72, Sir Walter Elliot's 

 Collection. 



Extreme length 

 Extreme height 

 Base-line from anterior margin 



of foramen magnum to apex 



of intermaxillaries 

 Length of nasals 

 Length of fronto-nasal suture 



to middle of occipital ridge . 

 Width of nasals at apex of 



frontals .... 

 Maximum interzygomatic width 

 Maximum frontal (interector- 



bital) width , 



Fig. 7. Orbito lachrymal region of skull of Sus harhatus, Borneo, i^i^d, Oxford 

 University Museum. 



This skull, like the other three skulls of the same species examined by me (of 

 which two are in the British Museum), differs from those already described in large 

 points as well as in small ones ; and there can be little reason for hesitating to 

 accept it as specifically distinct from them, and indeed from all other Suidae. 



The contour described by the middle line of its nasal and fronto-parietal regions 

 superiorly, the relations of the greatest width and greatest lengths both of the entire 

 skull and of the nasal bones, the position of the plane of its greatest interzygomatic 

 width, not posteriorly, but in the middle of the zygomatic arch, are points of large 

 difference. The exceeding simplicity of its third molars and the persistence of the 

 mesopterygoid as a distinct bone, are points of small difference, but yet of great mor- 

 phological importance. In the shortness of its lachrymal bone it resembles the other 

 Suidae without facial warts. 



Its naso-frontal suture and lachrymo-frontal ridge are more like those of these 

 pigs than those of Sus scrofa. 



Measurements of Skull of *Sus barbatus,' No. 151905, Oxford University 



Museum. 



Extreme length 

 Height . . 



Base-line .... 



Length of nasals from plane of 

 postero-lateral tips 



inches. 



19.7 



6.7 



16.7 



10.5 

 2 



inches. 

 Fronto-parietal region in verti- 

 cal aspect from same point 

 as preceding measurement 

 to occipital ridge in straight 

 line ..... 9*0 



