92 BRITISH FRESHWATER FISHES 



which lake he has sent to the British Museum a 

 number of specimens, 6 or 7 inches long, captured 

 with a fly in the month of May. These are silvery 

 fish with a bluish back, rather slender, and very 

 similar to young Windermere Char taken early in 

 the season, but usually with the paired fins longer, 

 the mouth larger, and the opercles narrower. 



In the highlands of Scotland, Lochs Builg in 

 Banffshire, Bruiach in Inverness-shire, Morie in Ross- 

 shire, Borollan, Loyal, and Baden in Sutherlandshire, 

 and Calder in Caithness contain Char which have 

 their peculiarities, but which I am not at present 

 inclined to separate specifically from S. willughbii, 

 to which also the Char of Loch Fada in North Uist 

 is very closely allied. 



In some of these the scales average larger than 

 in the Char of the Lake District, and the vertebrae 

 are also subject to some variation according to the 

 locality. The North Uist form seems to lack spots 

 entirely, the bluish-black hue of the back shading 

 into the uniform reddish colour of the body below 

 the lateral line. 



Ullswater and Haweswater belong to the system 

 of the River Eden, and lie somewhat apart from the 

 lakes inhabited by the Windermere Char, from 

 which they are separated by Helvellyn and Shap 

 Fell. The Ullswater Char is believed to be now 

 extinct, owing to the pollution of the stream in 

 which they spawned by refuse from the mines, but 

 Char are still to be found in Haweswater, although 

 not very abundantly. 



LONSDALE'S or the HAWESWATER CHAR 

 {Salvelinus lonsdalii) is a much smaller fish than 



