702 



PROF. H. Gr. SEELEY ON THE REPTILE 



Conclusion. 



Erom this survey it appears that Dinosaurs were well represented 

 in the Gosau beds. Most of the remains belong to two species of a 

 quadrupedal carnivorous genus Cratceomus, which in many respects 

 resembles Scelidosaurus. It is just possible that Struthiosaurus 

 may prove to be the same genus, or may have possessed the teeth 

 referred to Cratceomus. The genera Hoplosaurus, Oligosaurus, Rha- 

 dinosaurus, and OrnitJiomerus are only known from a few bones 

 each ; Megcdosaurus merely from teeth. It is just within the limits 

 of possibility that Doratodon may prove to be the jaw of Rhadino- 

 saurus ; but it is not likely to belong to the Crocodile, because true 

 Crocodilian teeth occur. Hence there are certainly, with the Moch- 

 lodon, seven Dinosaurian genera, while there may be as many as ten 

 genera. Of Crocodiles, Lizards, and Pterodactyles there are certainly 

 at least one each. The Chelonians are represented by two genera 

 and five species, two only of which are described. Thus the Gosau 

 fauna includes in all fourteen genera and eighteen species of reptiles ; 

 and there is every reason to suppose that these formed but a part of 

 the Reptilia living when the deposits were formed. 



I can scarcely hope that my efforts have been in every case suc- 

 cessful in determining the species to which these disjointed and 

 often fragmentary bones should be referred ; but I have throughout 

 worked on the basis of anatomical structure, and indicated only 

 such species and genera as the organization of the animals made 

 inevitable. 



I have now only to express my gratitude to Professor Suess for 

 his kindness in allowing me to study this collection and retain the 

 specimens so long in this country ; and I would also express my 

 thanks to Prof. Ramsay for permission to figure the skull of Acan- 

 thojoholis ; and to the Council of the Eoyal Society for assistance in 

 carrying on this research. 



APPENDIX. 



Note on the Gosatj Beds of the Neue Welt, West of Wiener 

 Neustadt. By Prof. Edward Suess, E.M.G.S. 



The Gosau beds have been deposited in preexisting valleys of the 

 Triassic and Rhsetic portion of our North-eastern Alps, and have 

 suffered so much subsequent folding and dislocation that in the 

 valley of the " Neue Welt," the spot where the bones were gathered 

 which I sent to you, several shafts pass twice through one and the 

 same seam of coal. The Gosau beds usually form green slopes at 

 the foot of the great mural precipices of Triassic and Rhsetic limestone. 

 In the Gosau valley, near Halstatt, exposures are offered by a series 



