DIPT ERA ^7 



is black, and the wings show the oval patch 

 in the B. johannis ; but as the fly is larger, 

 in the B. marci it is more noticeable. As 

 only the male seems to rove about to any 

 extent, it is just as well to imitate the male 

 only. 



Body. Black Berlin wool, ribbed with 

 silver tinsel. 



Hackle. Black. 



Wings. (Male) Transparent part of quill 

 feather of starling. 



Hook. No. 1 3, new size. 



An illustration of the natural fly is given 

 on Plate I., and one of the imitations on 

 Plate II. 



Curses 



There are several other small Diptera 

 which at times appear on the water in 

 swarms. These are known to the fisher- 

 men as Curses or Smuts. They are often 

 so small that there is no hook made small 

 enough upon which to tie imitations of 

 them. However, as every fisherman knows, 

 when the trout or grayling are feeding on 

 these flies, it is generally impossible to 

 get them to take the imitation of any other 



F 2 



