THE MUSCLES. 9 



FIG. 49. LATERAL OR OUTER ASPECT OF MUSCLES OF THE PECTORAL LIMB. 



a, Cranial part of the ento-triceps ; an, annular liagment ; am, abductor 

 minimi digiti ; c, extensor carpi radialis brevior ; del, acromiodeltoid ; 

 dl, biceps; ecd, extensor communis digitorum; ecrl, extensor carpi 

 radialis longior, whose tendon is marked m; emd, extensor minimi 

 digiti ; el, extensor indicis ; exul, extensor carpi ulnaris ; com, ex- 

 tensor ossis metacarpi pollicis ; ex, ulnar head of the flexor carpi 

 ulnaris ; fu, flexor profundus digitorum ; hu, humerus ; i, caudal part 

 of the ento-triceps ; o, olecranon process of the ulna ; p, claw of first 

 digit; pect, portion of the pectoralis ; r, region of the head of the 

 radius ; sp, spine of the scapula ; su, supinator longus ; tr\ ecto- 

 triceps with its middle portion cut out. 



