Part 1 

 STATION WORK OF THE SUMMER OF 1901 



BY JAMES G. NEEDHAM 



In 1901 the entomologic field station was conducted at Ithaca. 

 The results of extensive field work at Saranac Inn the preceding 

 season had not been fully worked up, and it seemed desirable 

 that this unstudied material should be reported on. Thus 

 access to collections and libraries became desirable; therefore, 

 when Professor Comstock generously offered the station work- 

 ing quarters in his laboratory at Cornell University and the use 

 >of his library, his offer was gladly accepted. 



A less ambitious program of field work was arranged for this 

 second season. But, on the other hand, systematic studies of 

 more importance and value, were planned and successfully 

 carried out. The field work of the season was directed toward 

 the study of nematocerous Diptera, aquatic Coleoptera and the 

 aquatic neuropteroid groups. Breedings of Odonata-Zygoptera 

 were carried on in order to supplement the extensive collections 

 made at Saranac Inn in 1900, and to furnish a better basis for the 

 account of that group in this bulletin. Not many additional 

 species were reared, but much valuable material was obtained 

 for some of the species there insufficiently studied. Trap lantern 

 and other miscellaneous collecting was done through the season. 

 In addition to the breedings of nematocerous Diptera, conducted 

 by Mr O. A. Johannsen with great diligence and success, numer- 

 ous Perlidae and Ephemeridae were reared by Mr Betten and 

 myself. Collections of aquatic Coleoptera were also made, and 

 these, together with my own breedings in that group, Mr. Mac 

 Gillivray has worked up, generously adding thereto previous un- 

 published breedings of his own. His account of the group pub- 

 lished herewith is destined to be highly useful to students of 

 aquatic insects. 



The chief feature of the station work of this season was 

 cooperation. The station and the entomologic laboratory of 

 Cornell University worked together most agreeably. Common 



