BY CHARLES W. DE VIS, B.A. 311 



Biceps (fig. 6 — b. f.)— Rises ventrad and contiguously to the last. 

 Behind the knee it forms two tendons. One passes clown the 

 inner edge of the gastrocnemius internus with which it is incor- 

 porated, the other passes forwards between the heads of the 

 gastrocuemii, and of the tibia and fibula, and is inserted into the 

 front of the tibia immediately below the head. 



Semimembranosus (fig. 6 — s. m.) — Rises a little apart from and 

 ventrad of the biceps, passes behind the tendon of the femoro 

 caudal, and quickty divides into two portions : — 



1st. Its tendon passes beneath the internal lateral ligament to be 

 inserted into the summit of the inner side of the tibia. 



2nd. Receives the tendon of the tibial adductor, and with it is 

 inserted into the summit of the outer side of the tibia. Along 

 its anterior edge runs the long tendon of the femoro caudal. 



Adductor tibialis (Plate xvi., fig. 9 — s.) — A compressed muscle 

 wedged in between the rectus and adductor magnus ; — it rises from 

 the acetabulo — pubic ligament anterior to the origin of the gracilis 

 — it is inserted with the first division of the semimembranosus. 



Adductor magnus (fig. 9 — a.) — Rises from the ischiopubic 

 ligament immediately below the gracilis. It is inserted into the 

 whole length of the posterior surface of the femur flanked distad 

 by the vastus externus and internus ; — the inner (femoral) portion 

 of the distal end is separable as a small flat belly. 



Vastus externus (Plate xv., fig. 6 — v. ex.) — Rather large, rises 

 from the proximal third of the femur, and at the middle blends 

 inclissolubly with the crurseus. 



Vastus internus (fig. 5 — v. i.)— Much smaller, from the inner 

 side of the humerus at about its middle, and merging below into 

 the extensor mass. 



Ilioperoneal (fig. 6 — i. p.) — Semitendinous from the middle of the 

 inferior border of the ilium, not overlapping the glutseus medius ; 

 inserted by strong tendon into the outer side of the head of the 

 femur between the outer head of the gastrocnemius externus 

 and the peronseus primus. 



