25B 
Psyche 
[June 
2b. Pterostigma with rounded posterior apex. Veins in basal half 
of forewing, especially M + Cui white, contrasting strongly 
in well colored individuals with fumose wing membrane. First 
male flagellomere only slightly incrassate 
E. crassicornis (Kolbe). 
Acknowledgments. — Material examined in this paper was in part 
borrowed from the following institutions: American Museum of 
Natural History, New York City; Los Angeles County Museum, 
Los Angeles, California; Museum fur Naturkunde, Humboldt Uni- 
versitat, Beilin, D. D. R. ; Snow Entomological Museum, Lawrence, 
Kansas; United States National Museum, Washington, D. C. I 
wish to thank the officers of these institutions for arranging the 
loans. I wish to thank the following individuals for gifts of speci- 
mens: Mr. John K. Bouseman, (Illinois Natural History Survey, 
Urbana, Illinois), Dr. J. M. Campbell (Department of Agriculture 
of Canada, Ottawa, Ontario, Canada), Dr. Henry F. Howden 
(Carleton University, Ottawa, Ontario, Canada). 
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