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 | 
Gillivray has worked up, generously adding thereto previous un- | 
published breedings of his own. His account of the group pub- |i 
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 fl 
Cornell University worked together most agreeably. Common i 
