288 Annals Entomological Society of America  [Vol. XIV, 
Beutenmuller, artist, New York City, for preparing the draw- 
ings from which Figs. 1 and 11 were made; Mr. C. A. Lloyde, 
photographer, Champaign, Illinois, and Mr. H. C. Cheno- 
weth, Urbana, Illinois, for assistance while taking photographs 
in the field. A similar photograph, from which the plate was 
made to reproduce Fig. 5, was used to make a plate for an 
illustration originally printed in the American Naturalist, Vol. 
LIII, p. 486. 
Certain financial aid and a university fellowship in zoology 
were placed at my disposal by the Graduate School of the 
University of Illinois. These were of assistance to me in the 
accumulation of data which, indirectly, have been helpful in 
the preparation of this paper. In this connection, recognition 
is due to President David Kinley, formerly dean of the Graduate 
School and to Dr. Henry B. Ward, professor of zoology. 
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