The Relation of Mollusks to Fish in Oneida Lake 305 
Corisa species. From stomach of Painted Terrapin. 
Famitry Noronectip® (Back-swimmers). 
Notonecta undulata Say. 
Station XXX, habitat 1, common. 
Plea striola Fab. From stomach of Painted Terrapin. 
Famity Nepipm (Water-scorpions). 
Ranatra species. 
Observed in Nicholson Bay, in the submerged vegetation. 
Famity Bretostomipz (Giant Water-bugs). 
Belostoma flumineum Say. Nymph. 
Station X XX, habitat 1, rare. 
Famity Gerrip# (Water-striders). 
Gerris bueno Kirk. 
Station XXX, habitat 1, common. 
ORDER TRICHOPTERA (Caddis-flies or Caddis-worms). 
The caddis-flies were determined by Dr. C. Betten. The 
long tubes and spiral cases of the larval stages of these inter- 
esting insects were abundant in nearly all parts of the lake. 
Upwards of ten species, of five families, are represented. 
See Betten (1901, p. 561) and Needham (1908, p. 252) for 
accounts of the members of this order. 
Famirty LIMNEePHILipe. 
Neophylax species. 
Empty cases were common at station XVI. 
Platycentropus maculipennis (Kol.). 
Station XX XI, habitat 1, B. Several empty cases from 
station IX are referred to this family. 
