The Relation of Mollusks to Fish in Oneida Lake 307 
Famity Hypropsycuip”, 
Polycentropus species. 
Observed at stations XX XIX and XL. 
Phylocentropus species. 
One slender sand tube was found at station XIX. 
ORDER LEPIDOPTERA (Butterflies and Moths). 
Famity Pyraip2. 
Nymphula sp. (= Paraponyx). 
The specimens from Oneida Lake were folded in the leaves 
of Potamogeton natans. They were collected at stations X 
and XL. The larva of Bellura melanopyga (Grote) 
(Noctuide) departs radically from the habits of the larve 
(caterpillars) of other members of the order. The eggs are 
probably laid on a pond lily leaf which the newly hatched 
caterpillars proceed to mine and feed upon. The last aquatic 
period (petiole period) is passed in the petiole of the leaf. 
Sunfish are said to feed upon this larve when the latter is 
swimming on the surface of the water (Welch, 1914, p. 112). 
Determined by Dr. P. 8S. Welch. 
ORDER DIPTERA (Flies). 
Famity Curronomip# (Midges). 
Chironomus species. 
Larve and pup of species of this genus were in the 
stomachs of the Manitou Darter and the Chain Pickerel. 
Faminty Curtcrpm (Mosquitos). 
Corethra species. 
Larve of this genus were found in the stomach of the 
Chain Pickerel. 
Mr. John R. Malloch, of Urbana, Illinois, is at work 
on the larval Diptera obtained from the stomachs of fishes, 
