CONTENTS . ix 



CHAPTER LI 



PAGE 



ORDER OF TROUT AND SALMON . . . ISOSPONDYLI 218 



Salmon Family 218 



Subdivision of North American Trout and Ciiarrs . . . 220 



The Salmon Group 228 



American Salmon \ 229 



CHAPTER LII 

 ORDER OF FLYING FISHES . . . SYNENTOGNATHI 252 



CHAPTER LIII 

 ORDER OF SOLID-JAW FISHES . . . PLECTOGNATHI 254 



CHAPTER LIV 



ORDER OF SUCKERS, CARP, AND MINNOWS 



PLECTOSPONDYLI 257 



CHAPTER LV 

 ORDER OF HALF-GILLED FISHES . . HEMIBRANCHII 265 



CHAPTER LVI 

 ORDER OF CATFISHES NEMATOGNATHI 268 



CHAPTER LVII 

 ORDER OF FLATFISHES .... HETEROSOMATA 273 



