154 THE MYOLOGY OF THE RAVEN. 



beneath the preceding muscle, while its fleshy portion 

 extends somewhat lower down in this intermetacarpal 

 fenestra to which it is attached than its companion. 

 Its tendon passes down in a manner similar to that 

 described for the interosseous dorsalis, but is carried 

 completely to the distal apex of the lowermost joint of 

 the index finger, being next to its posterior margin. 

 When this delicate little muscle contracts it flexes to a 

 marked degree the joint to which it is attached, and if 

 its contraction is carried to the full extent of which it is 

 capable, it will also flex both the digital joints of the 

 index finger, provided the opposition of the more power- 

 ful extensors is not applied at the time. 



Unterer Mittelhandmuskel (Zuriickzieher der Lenkfeder.) Prechtl, 



67. 

 Interosseux posterieur ou court Jlechisseur du medius. Milne-Edwards, 



pi. 9, fig. 3. 



Interosseus. Selenka, p. 137, No. 69. 

 Interosseus I. radialis. De Man, No. 33. 

 Interosseux palmavre. Gervais et Alix. 

 L'adducteur du deuxieme doigt. Alix, p. 419. 

 Interosseus palmaris. Watson, p. 101." (Bronn's Klassen des Thier- 



Eeichs, vi. Band, p. 290.) 



