PHYSIOLOGY, AND PATHOLOGY OF THE CHIMPANZEE. 



355 



and the femoral vessels pass between the two parts to the 

 popliteal space. Champneys (11 ) reviews the various descriptions, 

 Dwight (10) describes fusion of all the adductors except the part 

 of the magnus to the tubercle. Hepburn (24) states that the 

 latter is really a hamstring, and is supplied by the sciatic 

 nerve. I did not observe fibres from the main mass reaching 

 the knee. 



Text-figure 36. 



ADD. LONG. 



-P.C.L. 



Muscles and joints of the pelvic extremity. A.C.L; anterior cruciate ligament; 

 C.T : fibrous connecting slip ; E.L.H : extensor longus hallucis ; E.S.C : 

 external semilunar cartilage; I.C.B: internal cuneiform bone; I.S.C : 

 internal semilunar cartilage; Met.I : first metatarsal bone; N.B : scaphoid 

 or navicular ; P.C.L : posterior cruciate ligament ; PYR : pyriformis ; T.A : 

 tibialis anticus. Other letters in text. 



The adductor brevis (text-fig. 36, Add.Brev) arises by three 

 prismatic, interlocking bellies from the angle between the body 

 and horizontal pubic ramus. Its flat tendon is inserted into a 

 line from the small trochanter to the middle of the back of the 

 femur. 



The pectineus (text-fig. 36, Pect) arises from the pubic crest on 



