206 



THE MYOLOGY OF THE EAVEN. 



"joins that of the gastrocnemius internus, behind the 

 tarsal joint" (Anat. of Verts., vol. ii. p. 106). 



The soleus (Fig. 65 bis) is a well-developed muscle in 

 Geococcyx calif ornianus. It arises from behind the 



FIG. 60. The skeleton of left foot of a Raven seen from behind ; designed to 

 show origin and insertion of muscles, and drawn life-size, by the author, 

 from his own dissections. a, line of tendon of the flexor pcrforatus 

 medius primus pedis. b, is the line of the tendon of the flexor pcrfora- 

 tus annulnris primus pec/is. The exact insertion of these tendons are 

 somewhat hidden by the hind claw and basal joint, and they are drawn 

 to some extent diagrammatically. 



tibia, on its inner side, and just below the marginal rini 

 of its summit. The fibres at once form a little flat 

 muscle, rather longer in shape than the fish from which 



