AMERICAN TROUT-STREAM INSECTS 



With such a splendid array of the drake class 

 to choose from (there were nine others captured) 

 it was the most difficult thing to select those best 

 calculated to kill trout. Nearly all were exceed- 

 ingly plentiful at different times during the month. 

 The fish, I am sure, were so fully gorged that any 

 other creature but a fish would have been satisfied 

 and wanted to sleep off the effects of fulness. I 

 cut open a young brown trout, fourteen inches 

 long, and found it to be stuffed full to above the 

 gills with nothing but insects. It is nearly certain 

 that trout in June refrain from fish diet, as the 

 insects are much thicker over the water at night 

 than in the day. 



The two duns pictured are selected from seven 

 specimens I caught in June ; the rest being so simi- 

 lar that two are quite representative. 



No. 14-. Pointed-tail dun. This is the most 

 abundant and the largest size of any of this class 

 seen in June. They are all plentiful throughout the 

 month, in all kinds of weather, both day and even- 

 ing. It will be found a useful fly to alternate with 

 the drakes; and it can be used as a floating dry 

 fly, or by the wet method as second fly with either 

 of the two browns as end fly. 



No. 18. Black dun. One of a number of speci- 

 mens very slightly different but all quite abundant 

 at all times of day during the whole month. An 



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