DINOSAUR FROM THE ISLE OF WIGHT. 



61 



Pigs. 4 & 5. — Posterior and left lateral view of Dorsal Vertebra of 

 Iguanodon Mantelli. (From the specimen figured by Prof. Owen, 

 in the ' Wealden Rep tiles,' snppl. ii. pi. vii. figs. 4 & 5.) One 



eighth nat. size. 



Fig. 4. 



Fig. 5. 



Fig. 4. Posterior view, for comparison with fig. 3. 

 Fig. 5. Lateral view, for comparison with figs. 1 & 2. 



likely to be difference of opinion for some time to come. And if I 

 lean towards defining genera so as to make them small, it is because I 

 believe that characters are in this way better appreciated, and because 

 the groups of fossils become better comparable with existing natural- 

 history types. I have compared the vertebrae here described with 

 those of Iguanodon Preshvichi and other available named Iguanodons, 

 and believe that the character of the neural arch justifies my 

 distinction, though the types have some characters in common. 



Discussion. 



The President said that he had been long familiar with vertebra) 

 of this type, and had had a strong suspicion that they would prove 

 to belong to Iguanodon. 



