192 THE BATH OOLITE PERIOD. CHAP. 



processes ; posterior ones not. Their neural spine, as in crocodiles, 

 becomes more and more elongated and more retral in position, and 

 the corpus is laterally much compressed. 



The ribs are of crocodilian type. 



Of the pelvic bones we have only the very fine pair of ischia, 



Diagram LI. Teleosaurus of Enslow Rocks. Scale one-fifth of nature. 



The ischia in apposition : breadth, seven inches ; length about the same ; portions 

 of the antero-inferior process broken off. 



represented as seen from below in Diagram LI., and a pubic bone, 

 Diagram LIT. 



Iscftia. These bones have plesiosaurian analogy in the breadth 

 of the blade and length of medial connexion, as well as alliance 

 to crocodile in the proximal parts. 



The complete specimen here represented helps to explain a figure 

 in the Ossemens Fossiles, Plate XXI. fig. 21, which Cuvier and 

 Buckland admit to be an ischium, and place it with megalosaurus. 

 Professor Owen has given a good (reversed) figure (Mem. Pal. Soc. 

 Plate IV. fig. 5), with bones of megalosaurus, terming it 'right 

 ischium/ but by mistake it is marked as one-fourth of the natural 

 size. It is really half the natural size. The part of the drawing 

 representing the edge is inexact ; it was made before the bone was 

 cleared of the matrix. The bone is in the Oxford Museum, and 

 must be referred to teleosaurus. 



