2 TABLE OP CONTENTS. 



Page. 



PercidaB 43 



Stizostethium 43 



Stizostethium vitreum 46 



Stizostethium salmoneum 47 



Stizostethium canadense 48 



Catalogue of species of Stizostethium 49 



ElassominsB 50 



Elassoma 50 



Elassoma zonata 50 



AphododeridsB 51 



Asternotremia 51 



Aphododerus cookianus 52 



Asternotremia mesotrema 52 



List of species of Aphododeridse 53 



Umbridse 53 



Umbra pygmsea 53 



Esocidse 54 



Esox nobilior 54 



Dorysomatidse 55 



Dorysoma cepediana 55 



Cyprinidse ,. 55 



Genera of American Cyprinidae 55 



Luxilus selene 60 



Luxilus rosens 61 



Cyprinella calliura 61 



Photogenis grandipinnis 62 



Semotilus thoreauianus 63 



Nocomis milneri 64 



Cliola ariomma 64 



Hybognathus regius 64 



Notemigonus chrysoleucus G5 



Platygolio gracilis 65 



Catostomidae 66 



Myxostoma pcecilura 66 



HyodontidsB 67 



Hyodon selenops 67 



Synopsis of fresh- water Siluridss of the United. States 69 



Group Ichthseluri 70 



Analysis of genera of Ichthseluri 71 



Catalogue of nominal species 71 



Ichthselurus , 74 



Analysis of species of Ichthselurus 75 



Ichthaelurus furcatus 75 



Ichthselurus robustus 76 



Ichthaelurus punctatus 76 



