668 SCIENCE PROGRESS 



Very brief mention will suffice for a note by Mr. O. M. 

 Watson, in the Proceedings of the Geological Society for 1909 on 

 the Aetosaurus-like Ornithosuchus woodwardi from the Elgin 

 Sandstone of Lossiemouth. 



Remains of a large crocodile from the Judith River beds of 

 Montana have been referred by Dr. W. J. Holland in vol. vi. 

 p. 281, of the Annals of the Carnegie Museum, Pittsburg, to a 

 new genus and species under the name of Deinosuchus hatcheri. 

 Although the skull is unknown, the length of this reptile is 

 estimated at between thirty and forty feet and the species is 

 regarded as one of the largest known crocodiles by its describer, 

 who makes, however, no reference to Rhamphosnchus crassidens 

 of the Indian Pliocene, of which the dimensions have been 

 estimated as considerably greater. 



Steneosaurs from the Oxford Clay of Peterborough have 

 engaged the attention of both Dr. C. W. Andrews {Ann. Mag. 

 Nat. Hist. ser. 8, vol. iii. pp. 299-308) and Dr. E. Auer {Palceonto- 

 graphica, vol. lv. pts. 5 and 6), each of whom was working on the 

 subject without the knowledge of the other. As the English paper 

 appeared first, the new names given by Dr. Andrews are entitled 

 to stand. Steneosaurus kedsi, of that author, is characterised by 

 the great length and slenderness of the flattened snout, as well 

 as by the unusually large size of the temporal fossae. A second 

 species, S. nasutus, also long-snouted, is distinguished by the 

 relative shortness of the temporal fossae, the forward direction 

 of the orbits, the sculpturing of the frontals, and the large 

 number of teeth. A shorter-snouted species, S. diirobrivensis, 

 is characterised by the possession of only thirty-three pairs of 

 teeth ; while S. obtusidens differs from other members of the 

 genus by its thicker and more massive snout and heavy, 

 blunt-crowned teeth, of which there are twenty-eight pairs in 

 the lower jaw. 



Although known only by portions of the lower jaw, the 

 discovery of a land rhynchocephalian in the Jurassic of 

 Wyoming is a matter of considerable interest, as it is the first 

 evidence of the existence of such reptiles in North America. 

 These jaws are described in vol. xxxvii. pp. 35-42 of the 

 Proceedings of the U.S. National Museum by Mr. C. W. 

 Gilmore, who regards them as indicating a new genus and 

 species, for which the name Opisthias rarus is proposed. So 

 far as can be determined this reptile appears to be nearly related 



