ABSTRACTS AND DISCUSSIONS OF PAPERS 153 



MOUNTED ' SKELETON OF CANIS DIRUS, WITH REMARKS ON THE METHODS 

 OF RECONSTRUCTION OF EXTINCT ANIMALS - 



BY W. D. MATTHEW 



Eemarks by Mr. Gidley and Professor Seott. 



MOUNTED SKELETON OF BLASTOCERUS PAMP2EUS-—A FOSSIL DEER FROM 



ARGENTINA - 



BY W. D. MATTHEW 



SKELETONS OF DIPLODOCUS AND APATOSAURUS IN THE CARNEGIE MUSEUM 



BY W. J. HOLLAND 



(Abstract) 



By means of a lantern slide the speaker exhibited a photograph showing a 

 skeleton of Diplodocus in the rock, with a skull of unquestionable association 

 with the neck vertebra. This sets at rest all doubt as to the generic identity 

 of the skull referred by Marsh to this genus. A larger skull of the ''Diplo- 

 docus" type, with slender teeth, had been discovered very near an Apatosaurus 

 skeleton, and its occipital condyles were found to fit well into the cotyle of 

 the atlas of the Apatosaunis. The two genera, Diplodocus and Apatosaurus 

 (Brontosavnis); bad many structures in common and were nearly related. 



Eemarks by Professor Scott and Doctor Mook. 



At the conclusion of the scientific program the section resolved itself 

 into a committee of the Avhole to consider the future policy and action of 

 the section. After a discussion of the subject by Messrs. Osborn, Scott, 

 Holland, Case, Loomis, and Gregory, the chairman was empowered to 

 appoint a committee of five to make recommendations to the section. 

 The chair later appointed Prof. H. F. Osborn, Prof. W. B. Scott, Prof. 

 S. W. Williston, Prof. E. C. Case, and Mr. J. W. Gidley. 



SECTION OF INVERTEBRATE AND GENERAL PALEONTOLOGY 



Wednesday afternoon, at 4.30, the Section of Invertebrate and General 

 Paleontology met, with Vice-President Van Ingen in the chair. Tbe 

 first paper, in the absence of the author, was read by L. W. Stephenson 

 and was illustrated with numerous lantern slides. 



2 Read by W. K. Gregory in tbe absence of tbe author. 



