498 



6. M. obturator externus, 0-51 oz. 



Arises from the upper margin of the anterior half of the ischium 

 (Fig. 32, o. e.), and from the membrane of the ischiadic foramen, and 



Fig. 32. 



x, Tendinal foramen. y, Ischiadic foramen. a, Obturator foramen. 



is inserted by means of a strong tendon (Fig. 33, o. e.) into the back of 

 the outer side of the head of the femur, behind the glutceus medius. 



7. M. obturator interims, 2-25 oz. 



8. M. gemellus anterior, 0'08 oz. 



Arises from the point marked (Fig. 32, gm.) in front of the tendinal 

 foramen x ; and is inserted into the back of the femur (Fig. 33, gm.) 

 behind the tendon of the M. obturator. 



9. M. adductor longus, 1*00 oz. 



Arises by fascia from the anterior two-thirds of the lower border of the 

 ischium (Fig. 32, ad. I.), and is inserted into the lower half ofthelinea 

 aspera and into the tibia. 



N. B. — This muscle is double; its posterior portion weighs 0*14 oz., 

 and is inserted into the lower third only of the linea aspera ; the ante- 

 rior portion is inserted as above described. 



10. II. agitator caudce et tensor vagince femoris, . . . . 6-02 oz. 



Arises by s"lip of fascia from the prse- acetabular edge of the ilium over- 

 lying the posterior portion of the glutceus medius, and from the post- 

 acetabular edge of the ilium overlying the biceps femoris. It is inserted 

 partly by fascia into the outer side of the patella, and partly into the 

 lower margin of the vastus externus (1). 



