204 NEW YORK STATE MUSEUM 
ment of Culicidae is a generic synopsis of the family—and much | 
more; for he tabulates our known species of each genus, except | 
Culex. His careful and complete treatment of the Corethriinae 
is specially gratifying because this subfamily has been neglected 
by other American students of Culicidae. In the Chironomidae,,. 
that Chironomus which is the chief article of diet for brook | 
trout in Bone pond [see pt 2] is treated as completely as possi- | 
ble. Life histories are offered in two genera new to our fauna. | 
This is but the beginning of Mr Johannsen’s work on the Chiro- | | 
nomidae. : 
Dr Davis’s paper is a monograph of the Sialididae of America, | 
and will be of great service to students of this neuropterous | 
family, since it brings together descriptions of all known Ameri- | 
can species with an account of what is known of their life his- | 
tories. 
There remain, of station material still to be reported on, some 
Chironomidae and a large number of bred Perlidae and Ephemer- | 
idae. 
Part 2 
FOOD OF BROOK TROUT IN BONE POND 
BY JAMES: G. NEEDHAM 
I have already given in New York State Museum bulletin 47, j 
page 395-96, a brief statement of the conditions under which | 
there were obtained from Bone pond during the summer of 1900: 
the stomach contents of 27 brook trout for study. These trout | 
were all taken with hook and line. They were all adults and | 
had selected their food in the natural way from what the pond | 
offered. | 
The pond itself is a small natural body of water less than | 
300 meters in greatest diameter and nearly circular. It is with-| 
| 
out outlet and is surrounded by deep woods. 1 have given Kd 
brief sketch of its shore vegetation in bulletin 47 on page 389-90, | 
with mention of the commoner animals collected there. It con-} 
tains no fish but the brook trout. It was artificially stocked 
years ago, and has been repeatedly replanted with fry. Of the] 
three propagating ponds controlled by the Adirondack Hatch-} 
ery, it is by far the most successful in trout production. From 
the beginning the trout have been able to maintain themselves} 
