CAMBRIDGE ENTOMOLOGICAL CLUB 
OFFICERS 
President . 
Vice-President 
Secretary . 
Treasurer 
Executive Committee 
1923 
A. P. Morse 
R. H. Howe, Jr. 
J. H. Emerton 
. F. H. Walker 
C. W. Johnson, Miss E. P. Butler 
». E. Plath 
EDITORIAL BOARD OF PSYCHE 
EDITOR-IN-CHIEF 
C. T. Brues, Harvard University 
ASSOCIATE EDITORS 
C. W. Johnson, Nathan Banks, 
Boston Society of Natural History. Harvard University. 
A. L. Melander, a. P. Morse, 
Washington State College. Peabody Museum. 
J. H. Emerton, J. G. Needham, 
Boston, Mass. Cornell University. 
W. M. Wheeler, 
Harvard University. 
PSYCHE is published bi-monthly, the issues appearing in February, April, June, August, 
October and December. Subscription price, per year, payable in advance: $2.00 to subscribers 
in the United States, Canada or Mexico; foreign postage, is cents extra. Single copies, 40 cents. 
Cheques and remittances should be addressed to Treasurer, Cambridge Entomological Club, 
Bussey Institution, Forest Hills, Boston 30, Mass. 
Orders for back volumes, missing numbers, notices of change of address, etc., should be sent 
to Cambridge Entomological Club, Bussey Institution, Forest Hills, Boston 30, Mass. 
IMPORTANT NOTICE TO CONTRIBUTORS. 
Manuscripts intended for publication, books intended for review, and other editorial matter, 
should be addressed to Professor C. T. Brues, Bussey Institution, Forest Hills, Boston 30, 
Mass. 
Authors contributing articles over 8 printed pages in length will be required to bear a part 
of the extra, expense for additional pages. This expense will be that of typesetting only, which 
is about $2.00 per page. The actual cost of preparing cuts for all illustrations must be borne 
by contributors: the expense for full page plates from line drawings is approximately $5.00 
each, and for full page half-tones, $7-50 each; smaller sizes in proportion. 
AUTHOR’S SEPARATES. 
Reprints of articles may be secured by authors, if they are ordered before, or at the time 
proofs are received for corrections. The cost of these will be furnished by the Eiditor on appli- 
cation. 
Entered as second-class mail matter at the Post Office at Boston, Mass. Acceptance for 
mailing at special rate of postage provided in Section 1103, Act of October 3, 1917, authorized 
on June ag, 1918. 
