284 THE BATH OOLITE PERIOD. CHAP. 



It was found with femur No. I, and is represented in Diagram 

 CV1II. 



Regarded as a fibula, it seems rather too short for even the 

 middle-sized femur of ceteosaurus, but much too long for the smaller 

 animal. 



Another bone, in good condition regarded as a fibula, bears rather 

 a greater proportion to the femur of the large animal, than the 

 smaller specimen represented in Diagram CVIII. to the middle- 

 sized individual. It has the same general aspect and characters, 

 but is rather more curved at the larger extremity. Its length is 

 37 inches, somewhat less than that of the tibia to which it pro- 

 bably belonged ; the breadth of the extremities about 1 1 and 8 

 inches ; greatest thickness, 3 inches. 



One side is concave for a great part of the length, the other 

 convex. The bone is but little twisted, so that the long diameters 

 of the terminal faces are not much out of parallel. There is a 

 portion of a second of the same size. 



MetatarsaL Length, 11-30 inches; breadth at one end, taken 

 obliquely, 5*5 ; at the other end, 4-75 ; in the middle of the shank, 



3'25. 



The first notice of this bone is in Dr. Buckland's Bridgwater 



Treatise, ist ed. 1836, already referred to : ' There is in the Oxford 

 Museum an ulna from the Great oolite of Enstone, near Woodstock, 

 Oxon, which was examined by Cuvier, and pronounced to be ceta- 

 ceous; and also a portion of a very large rib, apparently of a 

 whale, from the same locality p .' 



In the second edition, 1858, we find added to this note : 

 'These fossils belong to a large whale-like reptile, the Ceteo- 

 saurus. R. OWEN/ 



Professor Owen had already expressed this opinion in his Report 

 on Reptiles to the British Association, in 1841, calling it a ' meta- 

 tarsal of ceteosaurus. 5 It has but little resemblance to any of the 

 bones regarded as metatarsals of iguanodon, or megalosaurus, or, 

 as will appear immediately, with the bones supposed to be meta- 

 tarsals of ceteosaurus from near Chipping-Norton, or others more 

 satisfactorily determined from Enslow Rocks. It seems to have 

 been by mistake that the locality is marked Enstone ; for it bears 



P The rib here referred to is not now known to be in the Museum. 



