XI. 



CETEOSA URUS ILIUM. 



279 



blade, the greatest width (or height) is 1 7 ; from the other extremity 

 of the socket, a similar measure gives 14. The thickness of the 



Diagram CVI. Ilium of Ceteosaurus, seen edgeways. Scale, one-tenth of nature. 



bone is, in general, not above 4 inches, thinner in the middle 

 part, without radiating ridges, but greatly thickened at one limit, 

 and through a considerable part of the acetabular socket. 



ct 



Diagram CVII. Ilium of Ceteosaurus, seen internally. Scale, one-tenth of nature. 



Of the hind limbs of the great ceteosaurus the Oxford Museum 

 contains two complete femora ; one complete tibia, and part of a 

 second ; two fibulae ; several metatarsals, entire except as to epi- 

 physes these are from one individual, dug up at Enslow Rocks. 

 From the same locality one femur, of a smaller animal ; one long 

 bone, and one metatarsal, probably of different individuals. There 

 are also a few bones of a much smaller animal of the same genus, 

 and probably of the same species, from the same place. 



Femur No. i. Length, 51 inches; extreme breadth of the upper 

 part of the bone taken obliquely, 1 7 inches ; circumference of the 



