SALMON TRIBE. 501 



the rivers in autumn to spawn. Jardine writes that " in approaching the entrance 

 of rivers, or in seeking out, as it were, some one they preferred, shoals of this fish 

 may be seen coasting the bays and headlands, leaping and sporting in great 

 numbers, from 1 to 3 or 4 Ibs. in weight ; and in some of the smaller bays the 

 shoals can be traced several times circling it, and apparently feeding." On the 

 other hand, the Continental May-trout spends the colder months in the deepest 

 waters of the mountain-lakes, only coming to the surface in May. During the 

 summer these trout may be seen swimming round the shoals of small fishes on 

 which they prey until they get them well together, when they make a sudden rush 

 among them. 



Much the same difference of opinion as obtains with regard 

 to the number of species of trout exists in the case of charr, 



Charr. 



GRAYLING AND CHARR (J nat. Size). 



Dr. Giinther recognising five British lacustrine species, which he regards as distinct 

 from 8. umbla of the Swiss lakes ; while Day includes the whole of these under 

 the latter, which is also taken to embrace the sibling (8. salvelinus) of the 

 mountain-lakes of Bavaria and Austria, as well as the migratory northern charr 

 (8. alpinus), ranging from Lapland and Scandinavia to Iceland and the northern 

 parts of Scotland. All charr differ from salmon and trout in having the teeth at 

 all ages confined to the head of the vomer, instead of being distributed over its 

 whole length ; and all the forms mentioned above, which have a very uniform 



