LIST OF PLATES. 



The plates accompanying this volr.me were engraved and printed by Julu-s 

 DiEN, of New York. TLe original drawings for Part I were executed by H. W. 

 Elliott, of WasLington ; tbose of Part II, by H. M, Martin, of Albany. 



P^RT I. 



PL^rj.ji^ J Silurian and Devonian specie.s. 



n Devonian species. 



Ill Devonian and Carboniferous (?) species. 



IV , Garboniferous species. 



V Carboniferous species. 



Yl Carboniferous species. 



Y J [ Cakboniferous species. 



VIII Carboniferous species. 



IX Carboniferous species. 



X Triassic species. 



XI Triassic species. 



XII Jurassic AND Carboniferous SPECIES. 



XIII Cretaceous species. 



XIV Cretaceous species. 



XV Cretaceous species. 



XVI Cretaceous and Tebtiary species. 



XVII Cretaceous and Tertiary species. 



P^RT II. 



I Priiiordial and Silurian species. 



II _ _ Primordial and Silurian species. 



Ill Devonian sPECiEP. 



IV WAVERLY SPECIES. 



V , Lower Carboniferous species. 



VI Upper Carboniferous and Triassic. 



VII Jurassic species. 



