14 NEW YORK STATE MUSEUM 



of this species during the season. Of the total of 42 D i p t e r a 

 eaten 27 were larvae and pupae, and these must have been ob- 

 tained from the water. 



Trichoptera. With the single exception of the large Neu- 

 ronia postica eaten by frog no. 3, all the other caddisflies 

 were teneral imagos, captured probably as they came to the sur- 

 face in transformation. This was evidenced by the pupal skins 

 still hanging to many of the specimens. All were in bad con- 

 dition in consequence, and in determining them I placed chief 

 reliance on the characters of the pupal skins. I was able to 

 assure myself that about nine of the specimens belonged to the 

 genus II a 1 e s u s and another to Hydropsyche. The sand 

 found in four of the stomachs seemed to indicate that larvae in 

 their cases had been eaten earlier and entirely digested. Larvae 

 of Poly -centre pus' lucid us and Molanna c i n e r e a 

 are sufficiently available in Little Clear creek. I have shown in 

 bulletin 68 that the brook trout in Bone pond swallow the larvae 

 of another species case and all. 



Odonata. Drangonflies constituted as large a part of the food 

 as any other single group of insects. Although the number was 

 but eleven, the size of the individuals was relatively large, the 

 adult A e s c h n a and the nymph of A n a x being among the 

 largest insects eaten. Four adult and apparently fully colored 

 blackwings, Oalopteryx maculata, two adults of A r g i a 

 v i o 1 a c e a and single undetermined specimens of L e s t e s , 

 E n a 1 1 a g m a and JE s c h n a make up the list, together with 

 a nymph of A n a x j u n i u s and an undetermined nymph of 

 the subfamily A g r i o n i n a e. The adults, so far as might be 

 determined, were all females and might have been obtained while 

 ovipositing. Frog no. 4 had swallowed a considerable mass of 

 eggs of Tetragoneuria. In bulletin 47, pp.490-492 (with 

 fig.19) I have given an account of these eggs. The frog probably 

 found a cluster unusually close in shore. 



Hemiptera. The water skaters (Hydrotrechus sp?) 

 constitute an important and fairly constant element of the food, 

 16 of the 19 specimens found being of this genus. 



Orthoptera. Five grasshoppers were found singly, the one in 

 condition fit for determination being Melanoplus femo- 



