Insects Bred from American Larch 109 
In conclusion the authors wish to express their gratitude 
to several sources for assistance received. Our thanks are 
due to Dr. EK. P. Felt, State Entomologist of New York, 
and his two assistants, Mr. Young and Miss Hartman, for 
their courtesies in placing the identified specimens in the 
State Museum at our disposal for comparison. We wish 
also to thank Dr. A. D. Hopkins for his kindness in placing 
his corps of specialists at our disposal in identifying speci- 
mens of Hymenoptera, Diptera and Lepidoptera. We wish 
also to thank these gentlemen directly: Mr. S. A. Rohwer 
for identifying the Hymenoptera, Mr. C. T. Greene for 
identifying the three Diptera, and Mr. Carl ‘Heinrich for 
naming the moth. Such help is indispensible in problems 
such as this and we are indeed grateful for it. 
