BULLETIN 2g5 



ruhlished >i!onthly hy the 



University of the State of New York 



AUGUST 1903 



New York State Museum 



Frederick J. H. Merrill Director 

 Ephraim Porter Felt State Entomologist 



Bulletin 68 

 ENTOMOLOGY 18 



AQUATIC INSECTS IN NEW YORK STATE 



A study conducted at the entomologic field station, Ithaca N. Y. under the direction of 

 EPHRAIM PORTER FELT D.Sc. 



JAMES G. NEEDHAM Ph D, Professor of biology, Lake Forest University 

 ALEX. D. MacGILLIVRAY Ph.B. Instructor in entomology, Cornell University 

 O. A. JOHANNSEN M.S. Instructor in civil engineering, Cornell University 

 K. C. DAVIS Ph.D. Professor of horticulture, West Virginia University 



PAGE 



Preface 199 



Part I Station Work of the Summer 

 of 1901. J- G. Needham 200 



Part 2 Food of Brook Trout iu Bone 

 Pond. J. G. Needham 204 



Part 3 Life Histories of Odonata, 

 suborder Zygoptera. J. G. Need- 

 ham 218 



Part 4 Some New Life Histories of 

 Diptera. J. G. Needham 279 



PAGE 



Part 5 Aquatic Chrysomelidae and a 

 Table of the Families of Coleopter- 

 ous Larvae. A. D. MacGillivray 288 

 Part 6 Aquatic Nematocerous Dip- 

 tera. O. A. JOHANNSEN 328 



Part 7 Sialididae of North and South 



America. K.C.Davis 442 



Explanation of plates 487 



List of text figures 499 



Plates 1-52 face 499 



Index 501 



ALBANY 



UNIVERSITY OF THE STATE OF NEW YORK 

 1903 



Meio4m-Jl2-3ooo 



Price 80 cents 



