AQUATIC IXSBCTS IN NEW YORK STATE 



205 



in large numbers. Most of the trout I saw taken from it in 

 1900 were rather lean, though otherwise in good and healthy 

 condition, and suggested that possibly it was becoming over- 

 stocked. 



Of the 27 stomachs obtained, one was empty, and the con- 

 tents of another were lost through the breaking of a bottle, 

 leaving 25 for study. I give below in tabular form a bare state- 

 ment of what these 25 had eaten, and follow it with an account 

 of what has been learned elsewherefof the biology of the insects 

 constituting their food. 



Table showing the stomach contents of 25 brook trout from Bone pond 



oA few brook trout scales. 



6 One little fresh-water mussel. 



c Antenna of adult $ chironomid of small size. 



dCarabid beetle claw. 



eScolytid beetle elytron and two little adult Chironomids. 



f Achorutes sp.? (Order Thysanura). 



ff Three little adult Chironomids. 



