238 ANATOMY OF VERTEBRATES. 



fig. 153, 57, arises from part of the outer margins of the first and 

 second costal plates and from the same margin of the cardinal 

 process of the hyosternal and contiguous part of the hyposternal : 

 it is inserted into the upper surface of the coracoid. The latis- 

 simus dor si, fig. 152, 58, arises from the inner surface of the first 

 costal plate, and is inserted into the neck of the humerus. The 

 deltoides, fig. 153, GO, arises by three heads ; one, ib. GO a, from the 

 inner surface of the ento- and epi-sternals ; another, ib. GO b, from 

 the clavicular process of the scapula; and the third from the 

 angle between that process and the body of the scapula : it is 

 inserted into the lesser tuberosity of the humerus. The claviculo- 

 brachialis, fig. 152, 61, arises from the clavicle, and is inserted into 

 the outer tuberosity of the humerus. The subcoracoideus, fig. 153, 

 62, arises from the under surface of the coracoid, and is inserted 

 into the inner tuberosity of the humerus. The super cor acoideus, 

 figs. 151, 152, 64, arises from the upper surface of the coracoid, 

 and is inserted into the outer tuberosity of the humerus. The 

 teres minor., fig. 152, 65, arises from the posterior border of the 

 coracoid and is inserted into the pit between the humeral tuberosi- 

 ties, with an attachment to the capsule of the shoulder-joint. 

 The triceps brachii, figs. 152, 153, 65 a c, arises from above the 

 glenoid margin of the scapula, 65 a, and from the humerus, 65 c : 

 it is inserted into the olecranon. The biceps brachii, fig. 153, 66, 

 arises from the back part of the coracoid, ee" : it is inserted, 

 with the brachialis internus, into the ulna, and by a slender tendon, 

 66 , into the radius. The brachialis internus, fig. 152, 67, 

 arises from the inner tuberosity and concave surface of the 

 humerus and is inserted into the proximal ends of both the radius 

 and ulna. The palmaris, figs. 150, 153, 68, arises from the outer 

 condyle of the humerus, and is inserted into the palmar apoiieu- 

 rosis. The flexor sublimis, figs. 151, 153, 69, arises from the outer 

 condyle of the humerus and is inserted into the metacarpal of the 

 fifth digit and into the tendon of the ulnaris internus. The flexor 

 profundus, figs. 150, 151, 70, arises from the concave side of the 

 ulna, and is inserted into an aponeurosis splitting into five tendons 

 for the last phalanges of the five digits. The pronator teres arises 

 from the outer condyle of the humerus : its insertion, shown in 

 fig. 154, 71, is into the radial side of the carpus, with that of the 

 pronator quadratics , ib. 72. The ulnaris internus, figs. 151, 153, 



73, arises from the tubercle above the outer angle of the humerus, 

 and is inserted into the ulnar side of the carpus and contiguous 

 end of the fifth metacarpal. The ulnaris externus, figs. 151, 152, 



74, arises from the tubercle above the inner condyle of the 



