COJSTEKTTS. 



Factors in Aquatic Environments. By Frank E. Lutz i 



Relation of Trichoptera to their Environment. By Chas. E. Si.eight . 4 

 Odonata in Relation to the Hydrophytic Environment. By Raymond C. 



OSBURN . , . ; g 



Dragonflies of the Vicinity of New York City with a Description of a New 



Species. By Wm. T. Davis 11 



Aquatic Hemiptera. By H. G. Barber 29 



Aquatic Coleoptera. By Chas W. Leng .32 



Some Habits of the Dytiacidze. By John D. Sherman, Jr 43 



Environment of Hydrophilidae. By Fred. Wintersteiner 54 



The Relation of Mosquitoes to their Environments. By John A. Grossbeck 55 



Gall Midges in an Aquatic or Semiaquatic Environment. By E. P. Felt 62 



TabanidcB as Inhabitants of the Hydrophytic Area. By Raymond C. Osburn 63 



Syrphidae in the Hydrophytic Area. By Raymond C. Osburn . . 66 



Three New Cicindelids. By Edw. D. Harris 67 



Frederick Blanchard 69 



A Correction . . 71 



Proceedings of the New York Entomological Society 72 



vJOURNAI^ 



OF THE 



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