REPORT OV THE STATE ENTOMOLOGIST 1902 163 



Aquatic Insects of the Adirondacks. A study conducted at the 

 entomologic field station, Saranac Inn N. Y., under the direc 

 tion of the state entomologist, by James G. Needham Ph.D. 

 and Cornelius Betten M.A. (N. Y. State Mus. Bui. 47. Sep. 

 1901 [issued Nov. 18]. 234p. 36 plates [six colored]) 



Contents page 



Preface '^83 



Part 1 Introductory: the undertaking, location, objects, methods and 



results 384 



Part 2 Life of Little Clear creek 400 



Part 3 Insect life histories 410 



Plecoptera 412 



Ephemerida 418 



Odonata 429 



Neuroptera 540 



Trichoptera, by Cornelius Betten 561 



Diptera 573 



Notes on other orders 582 



List and two new species of sawflies, by A. D. MacGillivray 584 



Original descriptions of new Diptera, by D. W. Coquillett 585 



Descriptions of five new parasitic Hymenoptera, by W. H. Ashmead.. . . 586 



Explanation of plates 590 



List of text illustrations 597 



Index 599 



Entomology and Entomologists in New York State (Argus 



[Albany] Dec. 3, 1901, p.5) 



Abstract of annual address delivered before the Entomological Society of 

 Albany. 

 Slaking Lime (Country Gentleman, Jan. 2, 1902, 67:6='=) 



Slaking and kind of Ume to be used for bordeaux mixture. 

 Elm Leaf Beetle (Troy Budget, Jan. 12, 1902, p.6; Argu8 



[Albany] Feb. 2, p.l2) 



Injuries, distribution and means of controlling Galerucella luteola 

 MQll. The work of the Laurel Hill Association of Stockbridge Mass. mentioned. 

 Insects Injurious to Elm Trees (Commissioners of Fisheries, 



Game and Forest. 5th Rep't, 1900 [rec'd Jan. 16, 1902] 



p.351-79; separate, issued Mar. 17, 1902) 



Directions are given for the use of insecticides and the foUowing'spccies are 

 noticed briefly: Elm leaf beetle, Galerucella luteola Miill. ;' bag" or 

 basket worm, Thyridopteryx [ephe m'e raeformis Haw. ; fall web- 

 worm, Hyphantria cunea Drury ; spiny elm caterpillar, E u v"a n'e's s"a 

 a n t i o p a Linn., elm borer, Saperda tridentata Oliv. and elm bark 

 louse, G o s s y p a r i a u 1 m i Geoff. 

 Two New Species of Ophion (Psyche, Feb. 1902, 9:307-8) 



Technical descriptions of Ophion arcuatum and O. appendicu- 

 latum, n. sp. 



