Dr. G. Baur—On Scaphognathus, Newton. 173 
blance between these elements and the corresponding bones in the 
Sauropoda? is not stated. 
In both, the jugal has two upper processes, which form the anterior 
and inferior part of the orbit. 
In Diplodocus the quadrato-jugal is connected directly with the 
maxillary ; a condition which seems to exist in Scaphognathus. 
Newton says the maxillary ‘comes below the lower angle of the 
jugal, and seems to meet the quadrato-jugal” (p. 505). Some of 
the Testudinata (Staurotypus, Aromochelys ... ) show a similar 
structure. 
The tendency of the quadrato-jugal in Scaphognathus to separate 
the postorbital from the jugal is very remarkable. 
3. The “ supra-temporal.” 
« At the outer end of each paroccipital process, and forming the 
hindermost angles of the skull, there seems to have been a small 
separate bone, which occupies the position of, and probably is thie 
supratemporal, a bone said to be constantly present in Lizards.” 
(Newton, p. 507.) 
A supratemporal bone has not been found in any member of the 
group to which the Pterosauria belong. It is absent in the Phyto- 
sauria, Crocodilia, Dinosauria, and Aves. This makes it probable, that 
it did not exist as a free element in the Pterosauria. ‘The supra- 
temporal, Newton, may be only a part of the paroccipital or 
squamosal. 
4. The “basipterygoid processes.” 
Mr. Newton suggests the possibility that these processes may be 
separate bones {p. 507), but on p. 509 he is inclined to consider 
these as elongated basipterygoid processes. It is quite evident that 
they cannot represent anything else.? In the Sauropoda they are 
developed in the same way. 
5. Some notes on the synopsis of genera of the Pterosauria given by 
Mr. H. T. Newton. 
In his “ Notes on Pterodactyls” * Mr. Newton follows Lydekker 
in adopting his (Lydekker’s) genus Ptenodracon.* 
This name is a synonym of Ornithocephalus, Seeley (non Som- 
mering). Both Lydekker and Newton say, without apparent 
authority, that Zittel® had shown Seeley’s name Ornithocephalus to 
be inadmissible. Zittel did not admit Ornithocephalus, Seeley, 
1 Marsh, O. C., “‘ Principal Characters of American Jurassic Dinosaurs, part vil. 
On the Diplodocide, a new family of the Sauropoda,” Amer. Journ. Sci. vol. 
xxvii. (Febr. 1884), pl. iil. figs. 1-3. 
2 Prof. Fraas considered these parts even as ‘‘ hyoids,’’ Paleontographica, vol. 
XXY. 
3 Newton, E. T., “ Notes on Pterodactyls,” Proc. Geologists’ Assoc, vol. x. No. 8, 
1888. 
4 Lydekker, Richard, ‘“‘ Catalogue of the Fossil Reptilia and Amphibia in the 
British Museum,’ Part i. London, 1888, p. 3. 
5 Zittel, Karl. A., ‘‘ Ueber Flugsaurier aus dem lithographischen Schiefer Bayerns,”’ 
Paleontographica, vol. xxix. 1882, p. 80. 
