Lake Trouts of North America. 235 



and New Brunswick lakes, including the state of Maine ; 

 whilst the siscowet is seemingly restricted to Lake Superior, 

 where Agassiz also recognized the namaycush. But little 

 is known of their habits ; moreover, several instances have 

 occurred lately of one or other of these trouts turning up in 

 lakes where their presence was unsuspected ; it is, therefore, 

 not unlikely, when their geographical distributions are better 

 worked out, that this seeming partiality to certain waters may, 

 after all, be more apparent than real. Further, it appears that 

 their claims to be considered distinct species rest altogether on 

 certain minor details of structure and colouring in each, which, 

 however, have been further abridged by late researches. It 



THE TOGUE, OR GREY-SPOTTED TROUT OF THE LAKES. 



will not, therefore, be surprising to such observers as may have 

 enjoyed opportunities of studying them in their native haunts, 

 should these so-called species turn out to be only varieties of 

 seasonal or sexual conditions of one grey-spotted lake trout, 

 common to the boreal regions of the continent. I shall now 

 point out the recorded differences between each, together 

 with my own personal observations of the togue, as met with 

 within the boundaries of our region. 



The namaycush, Mackinau salmon, and salmon trout of 



the Canadians is known to Indians by various other names. 



It was first described by Sir John Richardson, who gives a 



lucid account of the fish.* The most noticeable differences 



* "Fauna Boreali Americana," p. 197, pi. 79, 85. 



