nuthetes. echin0d0n. 247 



Ordinal Position Uncertain 



The affinities of the two following genera must, for the present, 

 remain undecided. They were regarded by their founder as present- 

 ing Lacertilian affinities, but their teeth are more like those of 

 Dinosaurians. 



Genus NUTHETES, Owen 1 . 

 Teeth like those of Megalosaurus, but, according to Owen, not 

 implanted in distinct alveoli, and partly anchylosed to the sides of 

 the jaw. The serrations disappear by wearing. 



Nuthetes destructor, Owen 2 . 

 The type species. Equal in size to the larger existing species of 

 Varanus. 

 Hab. Europe (England). 



The following specimens were obtained from the Middle Purbeck 

 (Upper Jurassic) of Durdlestone Bay, Sivanage, Dorsetshire, and 

 belong to the Beckles Collection. Purchased, 1876. 



48207. Split fragment of rock, showing part of denta^ with teeth. 

 (Fig.) Figured by Owen in his ' Wealden and Purbeck Eeptilia ' 



(Mon. Pal. Soc), suppl. ix. pi. ii. figs. 13-14 (1879). 



48208. Twelve teeth in matrix. Five are figured by Owen, op. cit. 

 (Fig.) fig. 15. 



48247. Fragments of rock containing conical pustulate bodies, re- 

 (Fig.) garded by Owen as dermal bones of this genus. Two are 

 figured by Owen, op. cit. figs. 18-21. 



Genus ECHINODON, Owen K 

 Teeth implanted in imperfect alveoli ; lateral ones with flattened 

 diamond-shaped crowns, having serrations on the fore-and-aft edges 

 of the upper half, and presenting a great resemblance to those of 

 Scelidosaurus ; anterior ones in upper jaw elongated. 



Echinodon becklesi, Owen 4 . 

 The type species. About the size of many existing species of the 

 Lacertilian genus Eumeces. 

 Hab. Europe (England). 



i Quart. Journ. Geol. Soc. vol. x. p. 120 (1854). 2 Loc. cit. 



3 Wealden and Purbeck Reptilia (Mon. Pal. Soc), pt. v. p. 35 (1861) 

 * Loc. cit. 



