AMERICAN TROUT-STREAM INSECTS 



same sized drakes and duns, now absent in the day- 

 time. It is an excellent floater and rarely leaves 

 the water's surface, where it skims around within an 

 inch of the water. I never saw it ascend into the 

 air. It has a pair of grayish-brown wings, and the 

 body is beautifully marked in white, black, and 

 brown. 



No. 13. Golden spinner. A still smaller insect, 

 which I call the small golden spinner, has a general 

 orange tone all over, the thorax being brighter than 

 the tail. The legs are part black, part orange. The 

 black head hangs away from the body. 



No. 14' Green-wing. A very small, orange- 

 colored stone-fly, with legs and horns brown and 

 the wings a yellow-green. This is the smallest 

 stone-fly observed during the season, as the brown 

 stone (No. 8) is the largest. 



No. 15. Orange spinner. The very small 

 orange spinner is a light, delicate insect that flies 

 round in almost every place during the daytime, 

 then in company with the very small drakes at eve- 

 ning. Its general tone is orange, with a gray tail, 

 orange-brown above. 



No. 16. Brownbottle fly. This small two- wing 

 fly is swift in movement, but stays mostly at the 

 side of the stream. I captured many in the net 

 along with other insects that varied considerably in 

 size, some larger, some smaller than the specimen 

 shown. The wings are a bluish cast; the head and 



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