204 NEW YORK STATE MUSEUM 



mont of Ciilicidae 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 Ohironomus 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 Ohiro- 

 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 JAMBS G. NEEiDHAM 



I have already given in New York State Museum bulletin 47^ 

 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. I have given a 

 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 



