64 EEPORT OF NATIONAL MUSEUM, 1915. 



In addition to the above is to be recorded the restoration and 

 mounting of the skull of Brachyceratoys montanensis^ this difficult 

 piece of work having been well accomplished by Mr. Norman Boss. 

 The type of Stylemys nebrascensis and that of Rutiodon carolinensh 

 were also mounted, and the preparation of a fairly complete skeleton 

 of Allosaurus fragilis was well under way. Among mammals com- 

 plete skeletons of a fossil peccary, a unique horned rodent, Eplgaulus 

 hatcheri^ and a large Pleistocene dog, Canis dims, were made ready, 

 their final mounting, almost wholl}'^ the work of Mr. Thomas Home, 

 leaving little to be desired. About 100 more or less f ragmental speci- 

 mens from the Cumberland cave deposit were cleaned. 



Mr. Charles W. Gilmore, assistant curator in charge of fossil rep- 

 tiles, completed and submitted for publication by the Geological 

 Survey a paper on Brachyceratops, a ceratopsian dinosaur from the 

 Two Medicine formation of Montana. He also contributed on the 

 osteology of Thescelosaurus, on the fore limb of Allosaurus fragilis, 

 on the genus Trachodon, and on a new restoration of Stegosaurus. 

 Good progress was made on a monogi'aphic study of the carnivorous 

 dinosaurs represented in the Museum, a work which can not, how- 

 ever, be finished for some time. 



Mr. James W. Gidley, assistant curator in charge of fossil mam- 

 mals, continued his work on the Fort Union mammals, which, though 

 previously reported as nearly ready for publication, has been held 

 for revision, in view of further discoveries of material. He likewise 

 began a detailed investigation of the Pleistocene fauna represented 

 in the large collections from the Cumberland cave deposit, to which 

 reference has already been made. Now that the collecting from this 

 deposit has been completed, it is expected that the descriptive work 

 may be brought to an early conclusion. Mr. Gidley, in conjunction 

 with Mr. Gerrit S. Miller, jr., of the division of mammals, spent 

 several months in the study of the fossil and living rodents, which 

 will comprise a revision and reclassification of the entire order. 



The results of a revision of the Museum collection of fossil fishes 

 have been embodied in a report by Dr. Charles K. Eastman, submitted 

 for publication. Dr. O. P. Hay, in continuation of his work on the 

 vertebrate life of the North American Pleistocene period, under the 

 auspices of the Carnegie Institution of Washington, has been instru- 

 mental in adding to the value of the collections. Among others who 

 consulted or made use of the fossil vertebrate collections were Dr. E. 

 H. Sellards, State Geologist of Florida ; Dr. W. J. Holland, director 

 of the Carnegie Museum at Pittsburgh, and Messrs. Arthur and 

 Louis Coggeshall, of the same museum ; Mr. C. H. Sternberg, of the 

 Canadian Geological Survey, and Mr. AV. E. Cutler, of Calgary, 

 Canada ; Prof. Henry T. Osborn, Dr. W. D. Matthew, and Dr. W. K. 



