CONTENTS 



Xlll 



CHAPTER XLVII.— ORDER OF TROUT AND SALMON 



Page 



Salmon Family . . . . . . 396 



Subdivision op North American Trouts and 

 Charrs 397 



North American Trout 

 The Salmon Group 

 American Salmon 



Page 

 ISOSPONDYLI 396 



. 397 

 . 400 

 . 400 



CHAPTER XLVin.— ORDER OF FLYING-FISHES 

 CHAPTER XLLX.— ORDER OF SOLID-JAW FISHES . 

 CHAPTER L.— ORDER OF SUCKERS AND MINNOWS 

 CHAPTER LI.— ORDER OF HALF-GILLED FISHES 

 CHAPTER LIL— ORDER OF CATFISHES .... 



CHAPTER LIII.— ORDER OF FLAT-FISHES .... 

 CHAPTER LIV.— ORDER OF FOOT-FISHES .... 



CHAPTER LV.— ORDER OF EELS 



CHAPTER LVL— ORDER OF PIPE-FISHES AND SEA-HORSES 



CHAPTER LVIL— ORDER OF THE DOGFISH 



CHAPTER LVIIL— ORDER OF GAR-FISHES, OR GANOIDS . 



CHAPTER LIX.— ORDER OF STURGEONS GLANIOSTOMI 427 



CHAPTER LX.— ORDER OF THE PADDLE-FISH .... SELACHOSTOMI 429 

 CHAPTER LXI.— ORDER OF THE CHIMERAS . . . CHIMAEROIDEI 431 



CHAPTER LXIL— ORDER OF SHARKS SQUALI 432 



CHAPTER LXIII.— ORDER OF RAYS AND SKATES RAIAE 434 



CHAPTER LXIV.— LOWEST CLASSES OF VERTEBRATES 437 



SYNENTOGNATHI 409 



. PLECTOGNATHI 410 



PLECTOSPONDYLI 412 



. HEMIBRANCHII 415 



NEMATOGNATHI 416 



HETEROSOMATA 418 



PEDICULATI 420 



APODES 421 



. LOPHOBRANCHI 423 



HALECOMORPHI 424 



GINGLYMODI 425 



Lampreys 



437 I Lancelets 433 



