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Dorso-epitrochlearis (Latissimo-olecranalis). — This muscle tends 

 to vary from the typical mammalian arrangement in shifting its 

 origin from the latissimus dorsi to the axillary border of the 

 scapula or the surface of the infraspinatus ; its insertion, however, 

 is into the inner side of the olecranon as usual. 



Text-fig. 91. 



Afin- and shoulder-muscles of the Hyrax. (Ventral view.) 



Supraspinal us. 

 Subscapulars. 



Serratus inognus. 



C'oraco-bracliialis. 



Biceps. 



Cephalo-huuieral. 



Triceps. 



Latissimus dorsi. 



Dorso-epitrochlearis. 



Slip passing over vessels. 



Teres major. 



12. 



13. 

 14. 

 15. 

 16. 



17. 

 18. 

 19. 



20. 



Flexor carpi radialis. 

 Flexor subiimis digitorum. 

 Palmaris longus. 

 Flexor carpi ulnaris. 

 Index-slip of Flexor brevis digi- 

 torum. 



I Lumbricales. 



Double tendon of profundus to 



minimus. 

 Flexor carpi radialis. 



In the fckiidse, Lesbres (V.) says the muscle is very well developed, 

 but in our specimen of the Keel-River Hog (11) it was small. Its 

 origin is from the axillary border of the scapula close to the origiu 

 of the triceps and from the fascia over the infraspinatus (11, 13), 

 but in Macalister'e specimen (8) it was also connected with the 

 latissimus dorsi. In the Babirusa (12) it is small and attached to 

 the latissimus dorsi. 



In the Chevrotaiu (20) it rose from the infraspinatus, but 

 iu the AVater-Chevrotain (23) from the latissimus dorsi. in 



