162 



THE MAMMALIA. 



interest when considered by themselves, but when 

 taken in connection with the geographical distribu- 

 tion of the animals, are of great significance. As 



FIG. 24. 



A. .Left fore-foot of the Red Deer. B. Left fore-foot of the common Roc. 

 c, Cannon-bone; m, metacarpals ; p, upper phalange. C. Second row of 

 tarsal and metatarsal bones of the Gelocus. After Kovvalewsky. 



examples of this we may take the red deer and the 

 common roe (Fig. 24). The rudimentary toes in 

 both cases consist of three phalanges. In the red 



