iV". LIST OP CONTKIBUTOES. 



The Gyrinidaj of America, north of Mexico 3G5 



Xotes on the Species of Agonoderus, Bradyccllus and Sienolophus iu- 



liabiting America north of Mexico 373 



Leidy, Jos. Notice of some Vertebrate Remains from Harden Co., Texas.. 174 



Indication of an Elotherium in California 177 



Notice of some Reptilian Remains from Nevada 177 



Notice of some Vertebrate Remains from the West Indian Islands 178 



Notice of some remains of Horses 195 



Notice of some extinct Cetaceans 196 



Remarks on a jaw fragment of Megalosaurus 197 



Remarks on Conosaurus of Gibbes 200 



Notice of American Species of Ptychodus 205 



Notice of some American Leeclies 229 



Notice of some remains of extinct Pachj'derms 230 



Notice of some remains of extinct Insectivora from Dakota 315 



Meehan. Thos. Sexual Law in Acer dasycarpum Ehrb 140 



Variations in Epigaja repens 153 



Monoecism in Luzula campestris 156 



Mitchella repens, M., a dioecious plant , 183 



Variations in Taxodium and Pinus 300 



On the Seed Vessels of Forsythia 334 



Meek, F. B. and A. H. Worthen. Notes on some points in the Structure 



and Habits of the Palteozoic Crinoidea 323 



Remarks on some types of Carboniferous Crinoidea, with descriptions of 



new genera and species of the same, and of one Echinoid 335 



Norris, Thaddeus. Remarks on a New Species of Osmerus (0. Sergeanti). 93 



Rand, Theo. D. On a New Mineral in Cryolite 142 



Reakirt, Tryon. Descriptions of some New Species of Diurnal Lcpidoptera. 87 



Wood, Alph. A sketch of the Natural Order Liliaceae 165 



