CAMBRIDGE ENTOMOLOGICAL CLUB 



OFFICERS FOR 1921 



President Nathan Banks 



Vice-President L. K. Eeynolds 



Secretary J. H. Emerton 



Treasurer F. H, Walker 



Executive Committee C. A. Frost, W. L. W. Field, P. G. Bolster 

 EDITORIAL BOARD OF PSYCHE 



EDITOR-IN-CHIEF 



C. T. Brues, Harvard University. 



ASSOCIATE EDITORS 



C. W. Johnson, Nathan Banks, 



Boston Society of Natnral History. Harvard University. 



A. L. Melander, a. p. Morse, 



Washington State College. Wellesley College. 



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, 15 cents extra. Single copies, 40 cents. 



Cheques and remittances should be addressed to Treasurer, Cambridge 

 Elntomological 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 IDntomological 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 Insti- 

 tution, Forest Hills, Boston 30, Mass. 



Authors contributing articles over 8 printed pages in length will be re- 

 quired 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 $3.60 

 each, and for full page half-tones, $4.80 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 Editor on application. 



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 29, 1918. 



