1894.] 



ANATOMY OF ORNITHORHYNCHUS. 



701 



middle finger, one from each part ; the remaining digits have one 

 each. A slip is sent round radial side of manus. Nerve-supply 

 from posterior interosseous. 



Fig. 2. 



Muscles of Front op Forearm and Hand. 



a. Flexor profundus digitorum. 



/3. Flexor carpi ulnaris. 



y. Portion of insertion of Panniculus. 



S. Extensor minimi digiti. 1 Muscles of posterior surface seen at left" side 



e. Extensor indicis. J of diagram. 



A. Expanded olecranon. 



B. Lower end of internal condyle of humerus. 



C. Lower part of shaft of ulna. 



Extensor minimi digiti. — This is a fairly large muscle. It arises 

 from the lower end of the humerus, in common with the other 

 extensors. It is inserted into the fifth digit. There is also a 

 slender special extensor passing to the fourth digit. 



