SUID^ OR PIGS. 



447 



teen pairs of ribs in the pig ; the carpus consists of eight bones, 

 the trapezium being fully developed ; there are also seven bones 

 in the tarsus. 

 Most of our domestic swine have probably descended from 



Fig. 212. — Teeth of Pig. 

 1. Upper teeth, table surface ; 2, lower teeth ; 3, lateral view of jaws. (Chauveau.) 



the Wild Boar (Sus scrofu). The wild boar at one time in- 

 habited this country, but has long since been extinct. It is 



