MAY FLIES AND MIDGES OF NEW YORK 13 



Crustaceans. Frogs nos. 7 and 12 had each eaten a crawfish, of 

 which there remained as evidence only the chelipeds. These indi- 

 cated half-grown individuals of the genus Cambarus. Frog 

 no. 15 had eaten, probably by accident, a minute and undeter- 

 mined copepod. 



Jlymenoptera. These collections were made during the season 

 of flight of the winged males and females of the big carpenter ant 

 (Camponotus pennsylvanicus) remains of which 

 were found in nine stomachs. Thus this species occurred a 

 greater number of times than any other. Stranded specimens 

 were frequently seen floating down the creek, and the frogs may 

 as well have obtained them from the surface as from the air. 

 Worker bumble bees (Bom bus ternarius Say and B. 

 c o n s i m i 1 i s Cr.) were found in five stomachs, and these were 

 doubtless obtained alive. The bullfrog would seem to be, like the 

 brook trout, immune to bee poison. The other hymenoptera were 

 but three ; a wasp (Vespa diabolica Sauss.) in frog no. 12, 

 a sawfly larva in frog no. 1, and a minute parasitic hymenopter in 

 frog No. 11. 



Coleoptera. Of the 16 specimens of this order eaten 12 were 

 Carabidae (11 adults and one larva) , and there were single 

 adults of Scarabaeidae,Ohrysomelidae, and u r - 

 culionidae, and a single larva of Elateridae. 



Diptera. This order was represented by the largest number of 

 individuals, but many of them were very small. Six families were 

 represented : Tipulidae, Ohironomidae, Stratio- 

 myidae, Syrphidae,Tabanidae, and Tachinidae. 



A single adult Tabanid was eaten, two adult Tachinids, 

 four adult Syrphids, the better preserved appearing to belong 

 to the genus Eristalis, five adult Tipulidae, all belong- 

 ing to moderate sized species of the genus T 1 p u 1 a . There was a 

 single adult Ohironomid, but there were eleven pupae, ten 

 of them from frog no. 34, all belonging to the genus h 1 r o n o - 

 mus and one larva from the same frog belonging to the same 

 genus and one belonging in C e r a t o p o g o n . A sixth family, 

 S t r a t i o my i i d a e , was reDresented by twelve larvae of 

 Stratiomyia badius? from frog no. 1. In bulletin 47, 

 p.576, I have recorded that I could find but a single specimen 



