284 PROF, ST.-GEORGE MIVART ON THE [Feb. 21, 



insertion of the gracilis), and dips in beneath the internal lateral liga- 

 ment of the lesser joint. Tbe second part arises frain the caudal 

 vertebrae, beneath and closely connected with the hinder half of the 

 origin of the first part of the biceps ; it is inserted behind and 

 above the inner condyle of the femur by a small, but strong, round 

 tendon. 



The semitendinosus has only a single origin (but a very extensive 

 one) from the fascia investing the ilium, sacrum, and anterior caudal 

 vertebrae ; it is inserted into the groove on the outer side of the 

 strong (deltoid-ridge-hke) prominence on the front of the tibia, and 

 by fascia into the tibia below and al)ove that prominence. The 

 upper part of its insertion is enveloped by that of the gracilis. 



The sartorius arises from the anterior inferior spine of the ilium, 

 and ends distally in the fascia investing the patella'. 



The gracilis consists of two distinct parts. The upper of these 

 arises from the ilio-pectineal ridge and pubic symphysis ; it is 

 inserted into the inner side of the patella and head of the tibia, its 

 aponeurosis of insertion being continuous with that of the second or 

 lower part of the gracilis. This second part (which is very large) 

 arises from the pubic symphysis and the adjacent ramus of the 

 ischium ; it is inserted into the front of the tibia from the patella to 

 below the summit of the insertion of the semitendinosus. 



The adductor is made up of four more or less distinct muscles : — 



(1) Arises, beneath the gracilis, from the brim of the pelvis 

 (ventrad of the origin of the pectineus) and from the front end of 

 the pubic symphysis ; it is inserted into the middle third of the back 

 of the femur between the insertion of the pectineus and that of the 

 second part of the adductor, its insertion descending below the 

 insertion of the former, but not so low as that of the latter. 



(2) The second part of the adductor {adductor magiius) arises 

 from the symphysis pubis and the adjacent ramus of the ischium, 

 covered in by the gracilis ; it is inserted into the lower half of the 

 middle of the posterior surface of the femur. There is no Hunter's 

 canal, the great femoral artery passing along the inner side of the 

 lower end of the muscle. 



(3) This part {adductor primus) arises from the brim of the 

 pelvis, dorsad of the origin of the first part of the adductor ; it is 

 inserted into the back of the femur, on the inner side of the first part 

 of the adductor and closely connected with it, flthough not extendi' g 

 so far downwards, though it is conterminous above with that first 

 portion. 



(4) The fourth part of the adductor arises from the pubic sym- 

 physis beneath the adjacent parts of the origins of the first and 

 second portions of the adductor. It passes down beside the hinder 

 margin of the pectineus, and is inserted into the outside of the great 

 trochanter. The great sciatic nerve passes down outside its in- 

 sertion. 



^ This is the nuisple wbicli was described as the fensor vayina fcmwis in the 

 Agouti (P. Z. S. ISIiG, p. 405); whiie what is there (p. 409) described as tbe sar- 

 torius, is really, 1 believe, the upper portion of the gracilis. 



