CAMBRIDGE ENTOMOLOGICAL CLUB. 



OFFICERS FOR 1918. 



President W. M. Wheeler. 



Vice-president S. W. Denton. 



Secretary A. C. Kinsey. 



Treasurer HA, Preston. 



Executive Committee 



A. F. Burgess, F. W. Dodge, C. A. Frost. 



EDITORIAL BOARD OF PSYCHE. 

 EDITOR-IN-CHIEF. 



C. T. Brues, Harvard University. 



assistant editor. 

 R. W. Glaser, Harvard University. 



associate editors. 



C. W. Johnson, 



Boston Society of Natural History, 



A. L. Melander, 



Washington State College. 



J. H. Emertoij, 

 Boston,. Mass. 



W. M. Wheeler, 



Harvard University. 



V. L. Kellogg, 



Stanford University. 



A. P. Morse, 



Wellesley College. 



J. G. Needham, 



Cornell University. 



PsTCHB is published bi-monthly, the issues appearing in February, April, June, August, 

 October and December. Subscription price, per year, payable in advance: $1.50 to subscribers 

 in the United States, Canada or Mexico; foreign postage 15 cents extra. Single copies, 35 cents. 



Cheques and remittances should be addressed to H. A. Preston, 17 East Highland Ave., 

 Melrose Highlands, Mass. 



Orders for back volumes, missing numbers, notices of change of address, etc., should be sent 

 to Dr. W. M. Mann, Bussey Institution, Forest Hills, Boston, 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, Mass. 



Authors contributing articles bver 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 one dollar 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. , 



reprints of articles can BE supplied at the 



FOLLOWING RATES: 



No reduction can be made for less than 50 copies. 



