10 
23. Notes on the Life History of the Lesser Bulb Fly, Eumerus stri- 
gatus Fallen. (5 min.) (Miss) B. M. Broadbent, Washington, D. C. 
Brief account of life history under cage conditions in greenhouse including recent 
data on feeding habits of larva and fly, on eggs and place of oviposition, and on 
duration of different stages. 
24. Eurytoma ( Isosoma ) orckidearum Westwood, The Orchid or 
Cattleya Fly. (8 min.) (Lantern.) C. F. Doucette, Willow Grove, Pa. 
Economic importance, and present methods of control. 
Program 
Friday Morning Session, January 2 , 1925 , g:jo 
Gymnasium, Central High School 
READING OF PAPERS 
25. Observations on Biological Control Work in California. (10 min.) 
(Lantern.) Harry S. Smith, Riverside, Calif. 
Data with reference to the commercial aspects of control of citrus pests by use of 
natural enemies. 
26. The Dissemination of Insects by Air Currents. (10 min.) E. P. 
Felt, Albany, N. Y. 
A summation of the evidence relative to insects being carried by air currents. 
27. Stability in Scientific Names. (5 min.) R. W. Doane, Stanford 
University, Calif. 
28. Entomologists Entering Commercial Fields. (5 min.) J. G. Sand¬ 
ers, Philadelphia, Pa. 
A hopeful indication that the standards of commercial companies are improving with 
their realization that trained men are necessary to their success. 
29. Foreign Travel and Entomologists Met while Searching for 
Enemies of the Gipsy Moth and the Brown-tail Moth. (10 min.) S. S. 
Crossman, Melrose Highlands, Mass. 
A brief outline of the area covered and foreign entomologists visited during recent 
travels in Europe and northern Africa investigating Gipsy Moth and Brown-tail 
Moth infestations with a view to obtaining insect parasites and predators for intro¬ 
duction into the United States. 
30. The Influence of Temperature and Humidity upon the Life 
Cycle of My ms houghtonensis Troop. (5 min.) (Lantern.) D. M. DeLong 
and A. A. Mathewson, Columbus, Ohio. 
A study of the life cycle of Myzus houghtonensis with special reference to the effect of 
temperature and humidity upon the variation in the number of days required for 
various season generations. 
