1848.] MANTELL ON ORGANIC REMAINS IN THE WEALDEN. 39 



found in Germany. The British fossil Cy prides, first made known hy 

 Dr. Fitton, also occur in the Wealden of the North of Germany. The 

 Isopodous crustaceans discovered Iby Mr. Brodie in the Vale of War- 

 dour have not been found on the continent. 



Insects. — To the list of Wealden insects given by the Rev. P. B. 

 Brodie in his interesting work*, I can add no new species ; but I am 

 able to corroborate his account of the occurrence of insects in the 

 freshwater strata above the oolite in Buckinghamshire ; my friend 

 the Rev. J. B. Reade, and myself, having collected a few specimens 

 from the quarries between Stone and Hartwell. None of these are 

 sufficiently perfect to require remark, with the exception of two frag- 

 ments of wings, apparently of coleopterous insects, which appear to 

 differ from any figured and described by Mr. Brodie ; and as fossils 

 of this kind are very rare, and difficult of detection, I am desirous of 

 preserving faithful representations of these fragile relics. They are 

 accurately figured in the annexed drawings. 



Plate III. fig. 1. Fragments of the membranous wing of a small 

 Coleopterous (?) insect, natural size. 



Fig. 2. The same, magnified. 



Figs. 3, 4, 5. Portions of the same, highly magnified. 



Fig. 6. Fragment of another wing, highly magnified. 



A few fragments of the elytra of Coleoptera have been observed in 

 the Wealden clays and shales laid bare by the rail way -works between 

 Tunbridge and Maidstone. 



Fishes. — The Wealden of Germany has yielded one species of 

 Enchodus, two new species of Hybodus^ two of Lepidotus, one of 

 Sphcerodus, and one of Gyrodusf. The scales and teeth of the two 

 well-known British species of Lepidotus {L. Fittoni and L. Mantelli 

 of Agassiz) appear to be as abundant in Germany as in the S.E. of 

 England, Several splendid examples of the last-named fishes have 

 recently been collected from the rocks exposed along the shore at 

 Hastings, some of which are in the possession of Dr. Harwood of St. 

 Leonard's, and of Mr. Moore of the former place. The entire cranium 

 covered with its plates, the jaws with teeth, and the body enveloped 

 in its rich cuirass of scales, are preserved. Some portions I examined 

 must have belonged to fishes ten or twelve feet in length. 



The jaws with teeth, and the crania of Hybodi, as large as the 

 H. basanus from the greensand of the Isle of Wight, described by 

 Sir P. Egerton|, have also been obtained. I have not been able to 

 examine these Ichthyolites with the attention necessary to speak posi- 

 tively as to the species, but I have little doubt that some of them be~ 

 long to the greensand i7?/5o6?2<5; and in fact, the occurrence of several 

 Wealden plants and reptiles in that division of the cretaceous forma- 

 tion, renders it highly probable that similar fishes will be found in 

 both series of deposits. 



Reptiles. — Of the colossal terrestrial and aquatic Saurians, whose 



* A History of the Fossil Insects of England, 

 t Mon. Nord. Wealden. p. 62. 

 X Geol. Journal, vol. i. p. 197. 



