THE SALMON TRIBE 



2877 



Charr 



face 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, Dr. Giinther 

 recognizing five British lacustrine species, which he regards as distinct from S. 

 umbla of the Swiss lakes; while Day includes the whole of these under the latter, 

 which is also taken to embrace the saebling (S. salvelinus} of the mountain lakes of 

 Bavaria and Austria, as well as the migratory northern charr (S. alpinus\ ranging 



GRAYLING AND CHARR. 



(One-sixth natural size.) 



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 type of coloration, agree in 

 having median teeth on the hyoid bone. Without committing ourselves definitely, 

 we confess that we are inclined to agree with Day as to the specific identity of the 

 whole of them. To illustrate the group, we have the ssebling depicted in the lower 

 figure of the accompanying illustration. In the spawning season the upper parts of 

 this fish are brownish green, and the sides lighter; the under surface passing 



