444 Notices respecting New Books. 



has been found, it is scarcely possible to ascertain how far thev are 

 related to existing species. Four kinds of teeth, some palates, scales, 

 fins, and vertebrae, are described by Mr. Manteil. 



These strata contain the remains of at least three very distinct kinds 

 of Chelonian reptiles ; viz. a fresh-water species allied to the Trionyx; 

 an unknown species of Emijs, reseml)iing a fossil fresh water turtle 

 found in the Jura limestone ; and a marine species of Chelonia, re- 

 lated to the fossil turtle of Maestricht. These are well described and 

 figured in the work. 



" Saurian' Anisials, or Lizards. Of the family of the Saurians," 

 observes Mr. Manteil, " the bones, teeth, and scales, of at least four 

 genera of gigantic species, have been discovered in the strata of Tilgate 

 Forest, namely. Crocodile, Plesiosaurus, Megalosaurus, and 

 Iguaxodon ; but hitherto no connected portions of their skeletons 

 have come under our observation. The teeth, both in form and struc- 

 ture, present such striking differences as to be readily distinguished 

 from each other, and from those of existing species ; but the bones 

 possess so many characters in common, that when we consider the 

 broken and detached state in which they occur, and their intermixture 

 with the debris of turtles, of vegetables, of fishes, and of shells, the 

 dilficulty of the attempt to identify the bones of the respective animals, 

 seems almost insurmountable to observers so distant from any collec- 

 tion of comparative anatomy, as ourselves. We therefore claim the 

 indulgence of the reader should the results of our investigations appear 

 to be in some respects inconclusive and unsatisfactory ; since, under 

 such circumstances, rigorous conclusions must not be expected. We 

 shall first describe the teeth, and such of the bones as are referrible, 

 with but little doubt, to one or other of the above-mentioned genera ; 

 and afterwards notice those osseous remains, whicli we are unable to 

 appropriate with any degree of certainty or probability." 



The Crocodilian remains in the Hastings strata consist of the teeth, 

 scales, vertehrce, ribs, some bones of the extremities, and osfroniisoi 

 a species first stated by Mr. Manteil to approach verv nearly to the 

 crocodile with concave vertebrae found at Havre, and since pronounced 

 by Cuvier to be almost identical with the fossil crocodile of Caen, 

 which belongs to the Gavials. 



Of the Megalosaurus Bucklandii, a gigantic animal, the remains of 

 which were first discovered by Dr. Buckland in the Stonesfield-slate, 

 the teeth, ribs, vertebra;, and other bones, have been found in the 

 strata of Tilgate Forest . 



The remains of the Tguanodon, a gigantic herbivorous Saurian dis- 

 covered by Mr. Manteil himself, are described at some length, and 

 portions of nine engravings devoted to the illustration of them. 



" Iguaiiodori. The discovery of the teeth and other remains of a 

 nondescript herbivorous reptile in the strata of Tilgate Forest, a rep- 

 tile 'encore plus extraordinaire que tous ceux dont nous avons con- 

 noissance *,' is to us one of the most gratifying results of our labours. 

 The first specimens of the teeth were found by Mrs. Manteil, in tlie 



• Cuvier, Oss. Foss. tome v. 2nd part, p. 351. 



