130 



THE MAMMALIA. 



Now if we compare the same part of the foot 

 of the Peccary (Fig. 12), the first carpal has 

 vanished with the first toe. The second toe, of 

 which our illustration shows the metacarpal (n), 

 is withdrawn from the ground as the lateral 



toe, hence becom- 

 ing reduced, but its 

 carpal (2) has not be- 

 come a superfluous 

 appendage, as in the 

 case of Anoplothe- 

 rium, it has entered 

 the service of the 



I -m\w T\ tbird one of the two 



LI 1 \ \ principal toes (in, 



iv) ; it has adapted 

 itself to the new con- 

 ditions of its organisa- 

 tion that have gradu- 

 ally been acquired. 



The illustration 

 shows that both animals are essentially the same 

 as regards the fourth and fifth carpals. In the 

 peccary the fifth toe is still attached to the fifth 

 metacarpal, as in the case of the second reduced 

 toe of the Anoplotherium, which has dwindled 



FIG. 12. Left Fore-foot of the 

 Peccary. After Kowalewsky. 



