VERTEBRATE PALAEONTOLOGY IN 1913 639 



the report of the discussion following the reading of the paper 

 that the generic name Oniithodesmns was " applied originally to 

 a number of fused vertebrae which differ materially from either 

 of the two groups of fused vertebrae in the specimen under 

 consideration." It is accordingly quite probable that the 

 generic designation may have to be changed, although this 

 will in no wise detract from the value of the communication as 

 illustrating an altogether peculiar type of the ornithosaurian 

 order. So markedly distinct, indeed, is this Wealden ptero- 

 dactyle that, in the opinion of the author, it should be regarded 

 as the representative of a distinct family, the serial position 

 of which is indicated in the following revised classification of 

 the Ornithosauria proposed by Mr. Hooley : 



I. Suborder Scaphognathoidea. 



1. Family Scaphognathidae. 



Genera Scaphognathus and Dimorphodon. 



2. Family Ornithodesmidae. 



Genus Omithodesmus. 



II. Suborder Pterodactyloidea. 



Family Pterodactylidae. 



Genera Pterodactylus and Ptenodraco. 



III. Suborder Rhamphorhynchoidea. 



1. Family Rhamphorhynchidae. 



Genera Rhamphorhynchus, Dorygnathus, etc. 



2. Family Ornithostomatidae. 



Genera Ornithostoma (= Pteranodori) and Nycto- 

 saurus (= Nyctodadylus). 



3. Family Ornithochiridae. 



Genus Ornithochirus. 



For the distinctive character of the new Wealden species 

 and its probable relationships, reference must be made to the 

 original paper, in which the osteology is described in great 

 detail. 



Turning to dinosaurs, the first papers for notice are two by 

 Mr. Barnum Brown {Bull. Amer. Mus. Nat. Hist. vol. xxxii. 

 pp. 387-407) on the skeletons of Saurolophus osbornt, a duck- 

 billed dinosaur of the family Trac/iodontidcu, and of Hypacro- 

 saurus altispinus, a new genus and species of the same family, 



