﻿38 FOSSIL REPTILIA OF THE 



border, b, in the view of the proximal end, gives the contour of the antero-internal part, 

 which is rather flatter than in Monitor; c shows the production above the procnemial 

 ridge at the fore part of the bone ; d is the part which was articulated to the distal 

 epiphysis supporting the outer malleolus. The proportions of the tibia to the femur are 

 less than in Monitors or Crocodiles ; the length of that (fig. 7) adapted to the femur 



Fig. 7. 



I 



Tibia, Cetiosaurus longus , yV' 1 nat. size. (Phps., part of diagr. cix, p. 282.) 



(fig. 6) is 3 feet 2 inches ; the breadth of the proximal end is 1 foot 5 inches ; of the 

 distal end 1 foot. 



As Professor Phillips remarks, " the terminal surfaces are strongly marked by the 



pitted adherence of cartilage, which gives the appearance of deficient 



epiphyses." 1 



1 P. 282-3. He adopts an idea that the convex part of the anterior surface of the distal portion of 

 the shaft of the tibia in the Crocodile is the homologue of the ascending process of the astragalus of 



