VERTEBRATE PALAEONTOLOGY IN 191 1 575 



vertebas which might have belonged to a primitive ichthyosaur- 

 ian. Messrs. Merriam and Byrant, in a separate communication 

 {op. cit. pp. 328-32), hesitate, however, to regard the teeth and 

 bones as associated. As regards the probable affinities of the 

 Nevada reptile, these writers remark that " of the reptilian forms 

 the rhynchosaur Hyperodapedon has several rows of depressed 

 conical teeth on the maxillary and palatine bones. They are 

 quite different in size and apparently in function, whilst the 

 skull-characters of the two forms are far apart. Whatever the 

 relationships of Omphalosaurus may prove to be when the 

 skeleton is better known, the dentition is evidently a peculiarly 

 specialised one which has been adapted to a diet of which shell- 

 covered molluscs formed an important part." 



Mr. Merriam emphasises the affinity of the Spitzbergen 

 Triassic reptile fauna to that of central and southern Europe 

 and that of western North America; Mixosaurus being common 

 to Italy, Spitzbergen and Nevada, whilst, as already indicated, 

 Pessoptetyx and Omphalosaurus may likewise prove to be identical. 

 Reverting to undoubted enaliosaurs, mention may be made of 

 Mr. J. C. Merriam's description in 1910 {Bull. Dep. Geol. Univ. 

 California, vol. v. pp. 381-90) of a primitive genus of 

 ichthyosaurs {Phalarodon) from the Nevada Trias. 



In the same year Mr. D. M. S. Watson published a further 

 contribution to his account of British Liassic reptiles {Mon. 

 Manchester Lit. Phil. Soc. vol. liv. No. 11), dealing in this 

 instance with Plesiosaurus propinquus. 



There is also a paper by N. Bogolubow on the occurrence 

 of Ichthyosaurus portlandicus in Russia, published in Bull. Ac. 

 Imp. Sci. St. Petersbourg for 1910, pp. 469-76. 



Bare mention of the title, " Les Ichtyosauriens des Forma- 

 tions Jurassiques du Boulonnais," must suffice for a paper by 

 Mr. H. E. Sauvage published in Bull. Soc. Acade'mique de 

 Boulogne-sur-mer, vol. ix., as it contains nothing of special 

 interest or importance. 



Equally brief notice must be accorded to Dr. A. Misuri's 

 account (apparently reprinted from Atti. Ac. Sci. Veneto-Trent 

 for 191 1) of a new species of soft river-tortoise from the 

 Miocene of Belluno, for which the name Trionyx vellunensis is 

 proposed. 



In the course of an article published in No. 10 of the Annals 

 of the Queensland Museum, Mr. C. W. de Vis describes two 



