ARTTODACTYLA. 



697 



Suidse. — The Old World boars and pigs, characterised by the mobile 

 snout and terminal nostrils. There are four well-developed 

 digits on the narrow feet, but the second and fifth do not reach 

 the ground in walking. The incisors are rooted ; the upper 

 canine curves outwards or upwards. The stomach is almost 

 simple, but has more or less of a cardiac pouch and several 

 short blind saccules ; there is a caecum. 



Fig. 303. — Foot of ox. 



i., Astragalus ; c, os calcis ; m.t., 

 cannon bone (fused third and 

 fourth metatarsals) ;///., a phal- 



Fig. 304. — Fore-leg of pig. 



h., Humerus; r. , radius; w., ulna; 

 s., scaphoid; /., lunar; c, cunei- 

 form; t., trapezoid ; m., os magnum ; 

 «., unciform ; 2-5, digits. 



Examples. — Sus, S-il. Jgabirnsa, 

 .3143 



2123 



the male with remarkable 



canines, the upper pair growing upwards from their base 

 through the skin, arching backwards as far as the forehead, 

 and sometimes forwards and downwards again, the lower pair 

 with a more or less parallel course ; Phacochcerus , the wart- 

 hog. 

 Dicotylidse. — The New World peccaries (Dicotyles), with a snout 

 like that of pigs, with four toes on the fore feet, and three behind. 

 The incisors are rooted, the upper canines are directed down- 



