82 



THE ARTISTIC ANATOMY OF ANIMALS 



here a little prominent, a surface with which the great 

 trochanter is in contact. 



The ilium is very highly developed, and is fused in the 

 median line with the ilium of the opposite side, the last dorsal 

 vertebrae, the lumbar vertebrae, and the sacrum. Because 

 of these relations with the dorsal vertebrae, it is in contact 

 anteriorly with the last ribs, which consequently emerge 

 from each side of the iliac region of the pelvis. 



The ischium forms a plate of bone which, in part, closes 

 the external portion of the cavity of the pelvis. Its superior 



Fig. 46. — Pelvis of a Bird (the Cock) : External Surface, Left Side. 



I, Ilium; 2, ischium; 3, pubis; 4, inferior extremity of the pubis; 

 5, sciatic foramen; 6, oval foramen, homologous to the obturator; 7, 

 coccygeal vertebrae. 



border is separate for a certain distance from the external 

 border of the ilium ; there is thus left an opening of more 

 or less considerable size, which represents or takes the place 

 of the great sciatic notch. 



The pubis, long and slender, is in connection with the 

 inferior border of the ischium, of which it follows the general 

 direction ; and circumscribes with this latter, below the 

 cotyloid cavity, an oval orifice, which is the homologue of 

 the obturator foramen. Its inferior extremity reaches 

 beyond the corresponding part of the ischium, bending 



