126 NOTES ON FISH AND FISHING. 



not often find their way into the angler's creel, at least 

 in any considerable number. They are best known in a 

 form they often ultimately take, namely that of " potted 

 charr," of which, by the way, potted " thunny " is an 

 admirable imitation. They are a prettily marked fish, orange 

 and red being the chief elements in their colouring. 



The Migratory species, whose colouring is more or less 

 silvery, is represented by the Salmon, Salmo salar, 

 by the Bull Trout, Salmo eriox, called also the Grey 

 Trout and Sewin, and by the Sea or Salmon- Trout, Salmo 

 trutta, called also the White Trout. The Non-migratory 

 species is distinguished by golden or yellow hues, espe- 

 cially on the lower part of the body, and includes the 

 Common Trout, Salmo fario, the Great Lake Trout, 

 Salmo ferox, the Lochleven Trout, Salmo levenensis, 

 and according to some naturalists the Gillaroo Trout, so 

 called from the structural arrangements of the coats of 

 the stomach, which resemble the formation of the gizzard 

 of the bird known as the Gillaroo. I do not of course 

 mean that these varieties of trout are only to be distin- 

 guished from one another by their colouring ; for they are 

 distinguished also by the position of their teeth, the shape 

 of their tail fins, their general conformation and other 

 physical characteristics, with which it will take the young 

 angler and ichthyologist some time to acquaint himself, 

 while his difficulties will be increased by the fact that 

 several of the above-named fish are called by different 

 names in different localities, in some cases the names 

 being actually interchanged. 



For information as to the various modes of capture of 

 the different species of trout just mentioned, and as to the 

 localities, chiefly in Scotland and Ireland, where they are 



