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. The second part arises from the caudal 
vertebrze, 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 fasvia investing the ilium, sacrum, and anterior caudal 
vertebrz ; it is inserted into the groove on the outer side of the 
strong (deltoid-ridge-like) prominence on the front of the tibia, and 
by fascia into the tibia below and above 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-peetineal 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 magnus) 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, although 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 muscle which was described as the tensor vagine femoris in the 
Agouti (P. Z. 8. 1866, p. 405); whiie what is there (p. 409) described as the sar- 
torius, is really, I believe, the upper portion of the gracilis. 
