108 



MUSCULAR SYSTEM OF BIRDS. 



second and third phalanx of the second toe ; 34 c, the short flexor of the 

 thumb ; 35, the radial flexor of the metacarpus ; 36, the ulnar flexor of 



the metacarpus ; 37, the great glu- 

 teus ; 38. the first adductor of the 

 thigh ; 39, the sartorius; 40, the large 

 muscle of the thigh ; 41, the small 

 muscle of the thigh, the tendon of 

 which passes upon the knee, and 

 joins the flexor of the toes; 42, the 

 common extensor of the leg, the 

 vastus externus and internus ; 43, 

 the first anterior flexor of the leg ; 

 44, the third flexor of the leg, the 

 semimembranosus ; 45, the fourth 

 flexor, or semi-tendinosus ; 46, 

 the gastrocnemius ; 47, the internal 

 part of this muscle ; 48, the pyra- 

 midal muscle which opens the jaws; 

 49, the temporal ; 50, the long liga- 

 ment of the lower jaw ; 51, the cu- 

 taneous muscle of the head ; 52, the 

 anterior masseter ; 53, the coniform 

 muscle of the hyoid bone ; 54, the 

 "-"--' anterior tibial ; ' 55, the posterior 

 tibial 56 > the extensor of the toe ; 

 57, the flexor of the toe; 58, the 

 long head of the common flexor of 

 the toes ; 59, the tendon of the ex- 

 tensor of the toes ; 60, the abductor 

 of the internal toes ; 61, the perfo- 

 rated flexor of the three toes ; 62, 

 the fibular muscle ; 63, the abductor 

 of the little toe ; 64, the abductor 

 of the great toe ; a, the pharynx ; 

 6, the trachea ; c, the hyoid ; d, the 

 ear ; e, the humerus ; /, the radius ; 

 ff, the ulna ; h. the thumb ; z, the 

 tibia ; k, the metatarsus ; /, the great 

 toe ; m, the internal toe ; n, the 

 median toe ; o, the external toe. 

 Ca*ut t AnatomieCot*p0rte, T.W.] 

 Fig. 77. Muscular system of th - 

 Falco nisus. 



