CONTENTS. 



Notes on Microscopic Crystals included in some Minerals. By 



Isaac Lea, , 4 



Third Contribution to the Fauna of the Miocene Period of the 



United States. By Edward D. Cope, 6 



On the Cetaceans of the "Western Coast of North America. By 



C. M. Scammon, United States Marine, 13 



Notice of some Extinct Vertebrates from "Wyoming and Dakota. 



By Joseph Leidy, M.D., 63 



Descriptions of new Crinoidea and Echinoidea, from the Car- 

 boniferous Eocks of the Western States, with a Note on 

 the Genus Onychaster, By F. B. Meek and A. H. Wor- 

 then, of the Illinois State Geological Survey, 67 



