18 FOSSIL REPTILIA OF THE CRETACEOUS FORMATIONS. 



The ilium, five inches in length, and one inch in breadth at the middle, expands 

 to both extremities by outgrowth from one and the same margin, which is thus 

 made concave, whilst the opposite margin is nearly straight (Tab. IX, fig. 1). The 

 upper expanded end is obliquely truncate. The lower one shows the articular 

 facets contributed to the acetabulum, and to the other pelvic bones entering into 

 the formations of that articular cavity. 



