DISTEIBUTIOK OF FEESH-WATEE FOOD FISHES. 



141 



Salmo purpuratus. 

 Saltno spilurus. 

 Platygobio gracilis. 

 Squalius atrarius. 

 Sqnalius niger. 

 Gila robusta. 

 Gila Grahami. 

 Gila elegans. 



Archoplites interruptus. 

 Hysterocarpns Traski. 

 Salmo irideus. 

 Salmo, Gairdneri. 

 Salvelinus malma. 

 Mylopharodon conocephalus. 

 Mylochilus caurinus. 



Coregonus Williamsoni. 

 Salmo Gairdneri. 

 Salmo pnrpnratas. 

 Salvelinus malma. 

 Mylochilus caurinus. 



Coregonus Williamsoni. 

 Salmo purpuratus. 

 Salmo spilurus. 

 Platygobio gracilis. 

 Squalius atrarius. 



39. THE COLORADO RIVER BASIN. 



Ptychochilus lucius. 

 Moxostoma macrolepidotum. ■ 

 Catostomus Clarki. 

 Catostomus insignis. 

 Catostomus cypho. 

 Catostomus latipinnis. 

 Catostomus discobolus. 

 Pantosteus generosus. 



40. THE SACRAMENTO RIVER BASIN. 



Pogonichthys macrolepidotus. 

 Squalius gibbosus. 

 Ptychochilus oregonejisis. 

 Ptychochilus Harfordi. 

 Lavinia exilicauda. 

 Orthodon microlepidotus. 

 Catostomus occidentalis. 



41. THE COLUMBIA RIVER BASIN. 



Eichardsonius balteatus. 

 Ptychochilus oregonensis. 

 Acrochilus alutaceus. 

 Catostomus macrochilus. 

 Catostomus discobolus. 



42. THE SALT LAKE BASIN. 



Squalius rhomaleus. 

 Chasmistes liorus. 

 Catostomus fecundus. 

 Catostomus ardens. 

 Pantosteus generosus. 



43. TABLE SHOWING THE GEOGRAPHICAL DISTRIBUTION OF THE RIVER FOOD-FISHES. 



