212 



THE BATH OOLITE PERIOD. 



CHAP. 



but on the view that the sigmoidal bone is a struthious ischium, 

 this should probably be rightly regarded as a pubis with similar 

 affinities. Length twenty-four inches. 



Diagram LXVI. Pubis of Megalosaurus. Scale one-tenth of nature. 



i, 2. The specimen is seen in opposite directions, and placed as if it had been 



vertical, which was probably not the case. 



As in the ischium, so in this, a curious, half spiral, very prominent 



keel begins near the proximal end, and subsides toward the distal end. 



There is a second ilium of quite a different form in the Oxford 



Diagram LXVII. The small ilium from Stonesfield. Scale one-fifth of nature. 

 I. External view. 2. To shew the acetabular socket. 



Museum, represented in Diagram LXVI. It is 4-35 inches long, 

 and I '8 high, the diameter of the acetabular socket 1*25. The 



