278 



Muscles of Leg and Foot. 



1. MM. agitator cauda, glutceus maximus, tensor vagina femoris 



(Fig. 21, b b), 0-90 oz. 



Fig. 21.* 



HIND LEG OF MACACUS NEMESTRINUS 



(with skin removed). 



a, Biceps femoris. 



b b, Combined agitator Cauda, glutceus 

 maximus, and tensor vagina fe- 

 moris. 



c, Great fascia of thigh. 



d, Outer portion of gastrocnemius, 

 g, Displaced patella of right 



knee. 



These three muscles form one continuous sheet of fibres, expanded 

 over the upper and outer portion of the thigh ; they are shown 

 at b b, Fig. 21. 



The agitator caudce forms the posterior portion of the entire 

 muscle, and takes its origin from the first and second caudal 

 vertebrae ; the tensor vagina corresponds to the agitator in front 

 of the muscle, and arises from the crest of the ilium; and the 

 smallest, or central portion, is composed of the glutceus maximus 

 proper ; this muscle, however, deserves its human name so little 

 in the Macaque, that it is only equal in weight to the glutceus 

 minimus, which is 165 grs. 



The whole complex muscle is inserted below and behind the great 

 trochanter, and into the whole of the great fascia covering the 

 thigh on the outer side.f 



* This and the following figures were drawn from nature by my son. 

 f The fibres of this curiously shaped muscle are not parallel, but converge through 

 an angle of 16°, to a point li| inches from the crest of the ilium; and their resultant 



