478 



8. M. subscapulars, 



9. M. teres major, 



a, 

 b, 

 c, 

 a, 

 b, 

 c, 



0-81 

 0-76 



0-26 

 0-35 



F. — Muscles of the Elbow. 

 M. triceps extensor, . . . 



3, M. biceps cubiti, 



b, . 



. 1-23 



c, . 



. 1-28 



a, . 





b, • 



. 0-14 



c, . 



. 0-01 



a, . 





b, . 



. 0-39 



c, . 



. 0-51 



0-69 oz. 

 0-79 oz. 

 0-24 oz. 



0- 31 oz. 



1- 97 oz. 

 1-26 oz. 



0-09 oz. 

 0-08 oz. 



0-35 oz. 

 0*45 oz. 



This muscle, as in the other Marsupials, is in the Kangaroos com- 

 posed of two muscles : — 



a, Coracoid biceps, . . . . 0'25 



b, Longhead biceps, . . . . Q-14 



0-39 



The coracoid biceps takes its origin from the coracoid, and is inserted 

 into the tubercle of the radius, as in man and other Mammals. 



The longhead biceps arises from the margin of the glenoid cavity 

 of the scapula, and its tendon passes over the head of the humerus ; it 

 is inserted with the tendon of of the brachiceus into the ulna, as in the 

 Crocodile. The two muscles cross each other in their fibres, like a long 

 X, or St. Andrew's cross. 



4. if. brachiceus (externus), 



0-24\ 

 0-36 J ' 



0-33 oz. 

 0-30 oz. 



Arises from the outer and posterior surface of the upper part of the hu- 

 merus, winding round under the external deltoid ridge, inside the 

 origin of the supinator longus. 



Gr. — Muscles of \ 

 I. M. supinator radii 



Wrist and Hand. 



•09\ 

 •20 J 



0-09 

 0 



0-25 oz. 

 0-15 oz. 



, a, . 

 „ . . b, 



The tendon of this muscle is distributed to the near ends of the 

 metacarpals of pollex and index. 



