EXPLANATION OF PLATES 24. 25. 35 



nearly to the bottom of the Jaw. Scales two thirds. 

 (Buckland.) 

 Fig. 4. Transverse section of the tooth (Fig. 2.) showing 

 the manner in which the back and sides are en- 

 larged, and rounded in order to give strength, and 

 the front brought to a strong and thin cutting edge 

 at D'. (Buckland.) 



Plate 24. V. I. p. 184. 



Fossil Teeth and bony nasal horn of Iguanodon ; and 

 lower Jaw and Teeth of Iguana. (Mantell and Original) 



In Mr. Mantel I 's collection there is a perfect thigh bone 

 of this animal, 3 feet 8 inches long, and 35 inches in circum- 

 ference at its largest and lower extremity. 



Plate 25. V. 1. p. 191. 



Fig. 1. Fossil Crocodilean found at Saltwick near 

 Whitby, eighteen feet long, and preserved in the 

 Museum of that town. This figure is copied from 

 Plate XVI. of Bird and Young's Geol. Survey of 

 the Yorkshire coast. As this appears to be the 

 same species with that engraved in the Phil. Trans. 

 1758, Vol. 50. Pt. 2. Tab. 22, and Tab. 30, and 

 presented to the Royal Society by Captain Chap- 

 man, Mr. Konig has applied to it the name of Teleo- 

 saurus Chapmanni. 



Fig. 2. Another head of Teleosaurus Chapmanni, also in 

 the Museum at Whitby, and from the J^ias of that 

 neighbourhood. (Original.) 



Fig. 3. Head of a third Individual of the same species 

 from the same locality, placed in 1834, in the British 

 Museum, showing the outside of the lower Jaw. 

 (Young and Bird.) 



Fig. 4. View of the inside of a lower Jaw of the same 



