EDITOR - IN - CHIEF. 
C. IT. Brurs, Harvard University. 
ASSOCIATE EDITORS, 
C. B. DAVENPORT, C. W. JOHNSON, 
Carnegie Institution. Boston Society of Natural History. 
J. H. EMERTON, A. P. Mors, 
Boston, Mass. Wellesley College. 
VY. L. KELLoGe, J. G. NEEDHAM, 
Stanford University, Cornell University. 
W. M. WHEELER, Harvard University. 

Psycue is published bi-monthly, 7. e. in February, April, June, August, October and 
December. 
Subscription price, per year, payable in advance: $1.00 to subscribers in the U. 8. 
and its Territories and Dependencies or in Mexico; $1.15 to those in other countries. 
To Contributors: 
Copy should be typewritten whenever possible. 
Separates, if desired, must be ordered in advance of publication. 
25 Separates of leading articles will be furnished gratis; additional copies will be 
supplied at cost. 
ADVERTISING RATES furnished upon application. 
All material for publication in a given number must be in the hands of the 
Editors on or before the first day of the month preceding the month of publication. 
All correspondence should be addressed to 
CAMBRIDGE ENTOMOLOGICAL CLUB, 
Bussey Insrirur1ion, HARVARD UNIVERSITY, Forrest HIL1s, 
BOSTON, MASS. 
Entered as second-class matter Dec. 21, 1906, at the Post Office at Boston, Mass., 
under the Act of Congress of March 8, 1879. 
