ITS ANCESTOKS AND EELATIONS. 



37 



which there were many kinds, differing slightly in 

 form and proportions, and in the characters of the 



Fig. 4.— Side and front view of the bones of the left 

 fore-foot of Anchitherium (without the upper row of 

 carpal bones), t, trapezium; tr, trapezoid; go, 

 magnum ; one, unciform ; 2m, second metacarpal ; 

 3w, third metacarpal ; Am, fourth metacarpal ; 

 5m, rudiment of the fifth metacarpal ; p', p", p" , 

 the first, second, and third phalanges of the mid- 

 dle (third) digit, The upper surface of third me- 

 tacarpal is represented for comparison with Figs. 

 5 and 6, showing gradual change of form. (From 

 Gaudry. ) 



enamel foldings of the molar teeth, but resembling 

 each other in the structure of the feet. The lateral 

 toes (second and fourth), though containing the full 



