40 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Juiie 14, 



remains are so abundant in some of the Wealden strata, numerous 

 detached bones of enormous size have been found at Hastings and 

 St. Leonard's, and in Sandown and Brook Bays in the Isle of Wight ; 

 some specimens have also been obtained from the Wealden at Ridg- 

 way, by Mr. Shipp of Blandford. The specimens I have examined 

 are, with but very few exceptions, referable to the genera IguanodoTiy 

 Hylceosaurus, MegalosauruSy Streptospondylus (J.) , Poecilopleu?'on(l) , 

 Goniopholis, and Cetiosaurus (?). 



Numerous fragments of the bones and carapaces of Chelonians 

 have also been obtained, especially of the remarkable Wealden Tri- 

 onyx, the T. Bakewelli. 



It would be irrelevant to my present object to offer a detailed ac- 

 count of the fossils thus briefly noticed, and I will simply enume- 

 rate some of them, as exemplifying the general character of the re- 

 mains of this class to be met with, along those parts of the coasts of 

 Sussex and the Isle of Wight above-mentioned. 



Plesiosaurus : Vertebrae. Hastings, and Brook Bay. 



Cetiosaurus (?): Caudal and sacral vertebrae. Hastings, and Brook 

 Bay. 



PoecilopleuroniJ)'. Vertebrae. Isle of Wight. 



StreptospondylusiJ) : Cer\ical and dorsal vertebrae of large size. 

 Isle of Wight, and Tilgate Forest. 



HylcBOsaurus : Vertebrae and dermal bones. Hastings, and Brook 

 Bay. 



Goniopholis : Teeth. Hastings, Isle of Wight, and N. of Germany. 



: Vertebrae, and a portion of the cranium (?). 



Macrorhynchus : The cranium of a reptile of the gavial type, thus 

 named by Dr. Dunker from its extremely elongated snout, has been 

 found in the Wealden of Germany near Biickeberg*. 



lyuanodon. — The remains of this genus of herbivorous terrestrial 

 reptiles are more abundant in the Wealden strata of the south-east 

 of England and of the Isle of Wight, than those of any of the other 

 saurians. Among the specimens found last year in Brook Bay were 

 two femora, each of which when entire must have been four feet in 

 length ; dorsal vertebrae five and a half inches in the antero-posterior 

 diameter; several teeth; dermal tubercles or horns; ungueal bones of 

 a more depressed form than those m the Maidstone specimen ; frag- 

 ments of the sacrum, and of ribs of large size, &c. 



At Hastings numerous bones have been collected during the last 

 two years, having for the most part been washed out of the ledges of 

 rock by the action of the waves, the agency by which almost all the 

 bones from this locality, and from the Isle of Wight, are brought to 

 view. In the cabinets of Dr. Harwood, Mr. Moore, and other local 

 collectors, I have seen bones of the Iguanodon of great magnitude. 

 The lower extremity of a femur measures forty-one inches in circum- 

 ference at the condyles, and exceeds in magnitude by nearly one-third 



* Mon. Norddeutschen Wealden. tab. 20. Another genus of Saurians has also 

 been proposed by Meyer, from part of a vertebral column with ribs from near 

 Harrel, and named Pholidosaurus. — Ibid. p. 71, tab. 17, 18, 19. 



