CAMBRIDGE ENTOMOLOGICAL CLUB 
Officers for 1950-51 
President 
Vice-President 
Secretary 
Treasurer 
Executive Committee 
K. A. Christiansen 
. A. G. Humes 
. R. J. Goss 
F. M. Carpenter 
. S. K. Harris 
. B. I. Gerry 
EDITORIAL BOARD OF PSYCHE 
F. M. Carpenter — editor 
C. T. Brues 
P. J. Darlington, Jr. 
J. Bequaert 
PSYCHE is published quarterly, the issues appearing in March, June, September, 
and December. Subscription price, per year, payable in advance: $3.00 to subscribers 
in the United States; Canadian and foreign subscriptions $3.35. Single copies, 85 ceniis. 
Cheques and remittances should be addressed to Treasurer, Cambridge Entomological 
Club, Biological Laboratories, Harvard University, Cambridge, Mass. 
Orders for back volumes, missing numbers, notices of change of address, etc., 
should be sent to the Editorial Office of Psyche, Biological Laboratories, Harvard 
University, Cambridge, Mass. 
IMPORTANT NOTICE TO CONTRIBUTORS 
Manuscripts intended for publication, books intended for review, and other editorial 
matter, should be addressed to Professor P. M. Carpenter, Biological Laboratories, 
Harvard University, Cambridge, 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 $2.75 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 $6.50 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 corrctions. The cost of these will be furnished 
by the Editor on application. 
The Sept., 1950, Psyche (Vol. 57, No. 3) was mailed December 29, 1950 
EATON PRESS INC., WATERTOWN, MASS. 
