MA.V. 



287 



The innominate bone (Fig to6) is remarkably broad in 

 proportion to its length. The ilium is flattened and ex- 

 panded, and has a greatly extended, almost semicircular, 

 supra-iliac border (s/). The sacral surface (ss) is small, and 

 scarcely rises above the vertebral attachment. The iliac 



Fig. 106 — Ventral surface of right inno- 

 minate bone of Man, ^. 



Fig. 107. — Ventral surface of right inno- 

 minate bone of Dog, 5. 



j^ supra-iliac border or crest of the ilium; Ji- sacral surface; z's iliac suriace : rif 

 acetabular border: pi pubic border; t'd ischial border of ilium; a acetabulum ; 

 //{/'th\roid foramen; ti tuberosity of ischium ; .y symphysis of pubis. 



surface (is) is very broad and hollowed. The gluteal surface 

 is likewise much expanded, and, though presenting several 

 curves, is, in the main, convex. The acetabular border (ad) 

 is very short, and has a strong, rounded, rough prominence 

 for the attachment of the tendon of the nrtus (extensor) 



