xviii LIST OF ILLUSTRATIONS. 



FIG. PAGE 



57. Corvus corax sinuatus, summit of tarso-metatarsus, seen 



from above 201 



58. Corvus corax sinuatus, basal joint of hallux, seen upon 



superior view 201 



59. Corvus corax sinuatus, basal joint of hallux, seen from 



beneath 201 



GO. Corvus corax sinuatus, skeleton of left foot, seen from be- 

 hind, showing the areas and points of attachment of 

 muscles 206 



61. Corvus corax sinuatus, outer aspect of the skeleton of left 



pelvic limb, showing superficial muscles of thigh and leg 207 



62. Corvus corax sinuatus, skeleton of left foot, designed to 



show where the tendons pass 210 



62 bis. Outer aspect of the right pelvic limb of Geococcyx 



calif ornianus 213 



63. Corvus corax sinuattis, outer aspect of left pelvic limb, 



showing second layer of muscles . , 216 



63 bis. Pelvic limb, right side, of Geococcyx calif ornianus ; the 



superficial layer of muscles removed 221 



64. Corvus corax sinuatus, outer aspect of left pelvic limb, 



showing third layer of muscles of thigh and leg . . . 224 



64 bis. Pelvic limb, right side, of Geococcyx calif ornianus, 



showing muscles of the third layer, and the ambiens . 231 



65. Corvus corax sinuatus, outer aspect of left pelvic limb, 



showing the fourth or deepest layer of muscles of thigh 

 and leg 236 



65 bis. Pelvic limb, right side, Geococcyx calif ornianus. show- 



ing the deepest layer of muscles 



