OSTEOLOGY OF BIRDS 



97 



Possibly in the eagle not so many ribs articulate with the costal 

 borders of the sternum, but the sterna themselves have exactly the 

 same characters. [Figures illustrating the osteology of the eagles are 



Fig. 48 Dorsal aspect of the pelvis of the 

 golden eagle (Aquila chrysaetos) , some- 

 what reduced, and drawn from photograph; both 

 by the author 



pi. 5, fig. 6; pi. 7, fig. 12; pi. 10, fig. 20; pi. II, fig. 25, 26; pi. 15, fig. 

 31 ; pi. 16, fig. 33.] 



H a 1 i a e t u s 1 e u c o c e p h a 1 u s in its brain case and as 

 far forward as to include the quadrates below, agrees in its skull 

 4 



