CONTENTS. 



Variations in Epigsea repens. By Thomas Meehan 15o 



Monoecism in Luzula campestris. By Thomas Meehan I-dS 



Account of the discovery of the fresh-water origin of certain 

 deposits of Sand and Clays in west New Jersey. By E. D. 



Cope 15T 



Remarks on some remains of Extinct Cetacea, etc. By Prof 



E. D. Cope 159 



Description of seven New Species of Unio from North Caro- 

 lina. By Isaac Lea 160 



Description of two new Species of Unionidse from Equador. 



By Isaac Lea 161 



Descriptions of Unionidte from the Lower Cretaceous Forma- 

 tion of New Jersey, By Isaac Lea 162 



A sketch of the Natural Order Liliacese, as represented in the 

 Flora of the States of Oregon and California, with special 

 reference to the Plants collected in an excursion along our 



Pacific Coasts, A. D. 1866. By Alphonso Wood 165 



Notice of some Vertebrate Remains from Harden Co., Texas. 



By Joseph Leidy, M. D 17-4 



Indication of an Elotherium in California. By Jos. Leidy, M.D. 177 

 Notice of some Reptilian Remains from Nevada. By Joseph 



Leidy, M.D - 177 



Notice of some Vertebrate Remains from the West Indian 



Islands. By Joseph Leidy, M.D 178 



Remarks on the Leaves of Coniferse. By Thomas Meehan.... 181 

 Mitchella repens, D., a dioecious plant. By Thomas Meehan.. 183 

 Second contribution to the History of the Vertebi'ata of the 



Miocene period of the United States. By E. D. Cope 184 



Notice of some remains of Horses. By Joseph Leidy, M.D... 195 

 Notice of some Extinct Cetaceans. By Joseph Leidy, M.D... 196 

 Remarks on a jaw fragment of Megalosaurus. By Joseph 



Leidy, M.D 197 



Remarks on Conosaurus of Gibbes. By Joseph Leidy, M.D... 200 



