THE MUSCLES. 89 
Fic. 49. Latrerat or Outer Aspect or MuscLes oF THE PEcToRAL Limp. 
a, Cranial part of the ento-triceps; an, annular hagment; 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; ei, extensor indicis; exul, extensor carpi ulnaris; eom, ex- 
tensor ossis metacarpi pollicis; ex, ulnar head of the flexor carpi 
ulnaris ; fu, flexor profundus digitorum; hu, humerus; 7, caudal part 
of the ento-triceps; 0, olecranon process of the ulna; p, claw of first 
digit; pect, portion of the pectoralis; 7, region of the head of the 
radius; sp, spine of the scapula; sw, supinator longus; tr ecto- 
triceps with its middle portion cut out. 
