MUSCULAR SYSTEM OF THE RED HOWLING MONKEY 87 



on the dorsum and tip of the olecranon. The caput mediale is formed 

 by fibers arising from the entire dorsal surface of the humeral shaft, 

 except where this area is occupied by the origin of the lateral head. 

 The caput mediale is a separate muscular mass which runs under 

 cover of the other two. Its insertion is on the tip of the olecranon 



Figure 28.— Dorsal view of the arm and shoulder (1, m. triceps brachii, caput laterale; 2, 

 m. triceps branchii, caput longum; 3, m. anconeus; 4, m. epitrochleo-anconeus; 5, n. 

 ulnaris collateralis; 6, m. triceps brachii, caput mediale. 



