LIST OF ILLUSTRATIOiNS 



Skeleton of Perch (after Gunther) .... 

 Bones of Head of the Perch (after Gunther) . 

 Bones of Part of Head of the Perch (after Gunther) 



PLATE 



I. The Sturgeon (Acipenser sturio) .... 

 n. The Perch {Perca fluviatilis) 



(The Ruffe, or Pope (Aceritta ce^-nua) 

 The Three-Spined Stickleback (Gastrosteus acukattis) 

 The Bullhead, or Miller's Thumb {Cottus gobio) . 

 IV. The Flounder {PleuroTiectes flesus) .... 



{The Roach {Leuciscus rutilus) ..... 

 The Gudgeon {Gobio fluviatilis) 



r The Dace {Leuciscus vulgaris) ..... 

 VI. J 



I The Minnow (Leuciscus fkoxinus) .... 



VII. The Bream (Abraniis brama) 



{ The Lxjach (Nemachilus barbatulus) .... 

 VIII. Jj 



I The Pike {Esox huius) 



IX. 



X. 



XI. 



XII. 



f The Salmon in Spring {Salnw salar) . . . , 

 The Salmon in Autumn {Salmo salar) 



The Bull-Trout (Salnio eriox) 



The Common Trout : Northern Variety {Salmo fario) . 

 The Salmon-Trout {Salmo tnctta) . . . , 

 The Common Trout : Southern Variety {Salmo fario) , 

 The Char {Salmo [Salvelinus] alpinus) 

 The Grayling {Tkymallus vulgaris) . . . , 

 f The Eel {Anguilla vulgaris) 



PAGE 



6 



23 



Facing 36 

 48 



80 



96 

 128 



„ 140 

 150 

 163 



193 



256 



[The Lampern {Petromyzon fluviatilis) . 



I - 



272 



288 



