CONTENTS. 



Pages. 



Editorial 343-346 



XII. A Mounted Skeleton of Titanotherium dispar 



Marsh. Bv J. B. Hatchkr 347-355 



XIII. Structure of the Fore Limb and Manus of Bronto- 



saurus. By J. B. Hatcher 356-376 



A XIV. The Genera and Species of the Trachodontidae 

 / (Hadrosauridae, Claosauridae ) Marsh. By J. 



B. Hatcher 377-386 



XV. Some New Pennsylvanian Thorns. By W.W.Ashe 387-398 



XVI. Osteology of the Psittaci. ByR.W.Shufeldt, M.l). 399-421 



XVII. An Annotated Catalogue of the Shells of the Genus 

 Partula in the Hartman Collection in the Car- 

 negie Museum. By Herbert H. Smith . . 422-485 



XVIII. Two New Species of Bahaman Lepidoptera. Bn 



W. J. Holland . . 486-489 



XIX. Elosaurus parvus : A New Genus and Species of 

 / the Sauropoda. \\\ O. A. Peterson and C. 



AV. Gtlmore 490-499 



Plates XVI-XXV inc. 



