ABSTRACTS OF PAPERS 153 



The section reconvened at 9.10 a. m., Thursday, January 31, and the 

 program of sectional papers was continued as follows : 



HEADS AXD TAILS; A FEW NOTES RELATING TO SAUHOPOD DINOSAURS 



BY W. J. HOLLAND 



(Abstract) 



The author aimounced the discovery of many dinosaur skeletons, some re- 

 markably complete, iu the quarries worked by the Carnegie Museum In the 

 Morrison formation of Uiiita County, Utah. He presented the evidence for 

 associating vpith the skeleton of Brontosaurus a skull unlike that arbitrarily 

 referred to this genus by Professor Marsh, and much more nearly resembling 

 the skull of Diploducus. The tail of Brontosuurus is extended in a long, 

 slender whiplash, as in Diplodocus. 



llie papoi- was discussed by Messrs. Osborn, Lull, Granger, and 

 Matthew. 



Mr. Granger's paper, submitted at the preceding session, was then 

 brought up for further discussion by Professor Osborn, Doctor Matthew, 

 and Mr. Granger. 



The next two papers read were: 



OBSERVATIONS ON ADAPID^E AND OTHER LEMUROIDEA 

 BY W. K. GREGORY 



OBSERVATIONS ON THE PH7L00ENY OF THE HIGHER PRIMATES 



BY W. K. GEEGORY 



(Abstract) 



The author presented certain conclusions from recent researches on living 

 and extinct primates, with the aid of more complete materials than had hith- 

 erto been available. The importance of the basicranial characters and their 

 interpretation were discussed and present conclusions stated as to the affini- 

 ties of the several living and extinct groups. 



The papei's were discussed by Professor Osborn and Doctor Matthew. 



RECONSTRUCTION OF THE SKELETON OF BRACHIOSAURUS 



BY W. D. MATTHEW 



(Abstract) 



Tiio author presented a sketch reconstruction of the skeleton of tliis genus, 

 tlie largest known lUnosaui', based on the skeletons iu the Field Miiseum, 

 Chicago, described by E. S. Itiggs, and partial descriptions by Professors 

 Branca and Janensch of the skeleton from German East Africa in the Berlin 

 Museum. 



