74 



MATERIALS FOR A MEMOIR ON 



In Fig. 19 the animal is in diagonal lieterochiry, in which 

 position the right hind leg shows the fifth toe in the axis of the 

 leg, and greatly abducted from the fourth. 



(Fig. 19 or series.) 



In Fig. 20 it is again synchiral, the fore pair now assuming 

 the work of supporting the body. The fore limbs are nearly at 

 the extremes of forward and backward movement. 



The sole of the foot in the left fore foot is in part in aid of 

 the limb, and presents an example of the plantigrade foot be- 

 coming semi-digitigrade as the foot passes backward of the vertical 

 line. 



(Fig. 20 or series.) 



It will be seen that the gait is irregular ; it is first a walk or 

 trot, afterwards assumes the position of pacing, and finally ends in 

 a gallop, or as much of the latter gait as can be assumed to exist 

 in an animal with short legs. 



The Baboon. (Series 747.) 



In the series of the baboon the animal is seen in the walk. 

 The form was accepted for comparison with the raccoon because 

 of the position of the animal near the other end of the scale of 

 quadrupeds. The limbs hav^e great length, and the intervals be- 



