The Gluteal and Femoral Muscles in a Marmoset. 187 



upper and second fourths of the thigh. The inferior muscle 

 was somewhat larger than the superior. It took origin from 

 the bone above, and outside the anterior inferior spine of 

 the ilium, and was some little distance removed from the 

 superior muscle at its origin. 



As it passed downwards, it lay internal to and partly 

 under cover of the superior muscle. It was inserted into 

 the fascia lata under cover of the insertion of the superior, 

 but extended farther towards the knee. 



Both muscles were enclosed in a fold of deep fascia, which 

 extended from the anterior border of the ilium downwards, 

 to become continuous with the fascia lata on the outer side 

 of the thigh. 



Both were supplied by branches of the superior gluteal 

 nerve. The branch to the inferior muscle passed forwards 

 between two of the divisions (the first and second) of the 

 gluteus minimus, and was larger than was proportionate to 

 the size of the muscle. 



In most cases tensor fascice femoris is blended in a greater 

 or less degTee with gluteus maximus, but there was no fusion 

 in the Bapale. In lemurs the muscle does not exist apart 

 from gluteus maximus. In all the Primates described by 

 Bischoff, it is a weak muscle, and almost entirely blended 

 with the anterior border of gluteus maximus. In Midas 

 Tosalia (3) it is fairly large and distinct, and slightly con- 

 nected with gluteus maximus. In Cynocephalus anuhis it 

 arose half-way down the border of the ilium. In man the 

 muscle may be split into two or more parts (11). 



Sartorius was long and slender, and muscular throughout. 

 It arose from the anterior superior iliac spine and from the 

 border of the ilium immediately below, internal to the 

 superior tensor. It was inserted into the inner surface of 

 the upper part of the tibia, just in front of the insertion of 

 the gracilis. 



The nerve supply was from the anterior crural nerve. 



In the Midas rosalia (3) the sartorius is less like the 

 muscle in man, for the lower end expands into a broad 

 sheet of muscular fibres. In lemurs the origin is lower 

 down on the anterior border of the ilium than in Hapale. 



