EDITOR-IN-CHIEF. 
C. T. Brures, Harvard University. 
ASSOCIATE EDITORS. 
C. W. Jounson, V. L. KEt1LoGe, 
Boston Society of Natural History. Stanford University. 
A. L. MELANDER, A. P. Morse, 
Washington State College. Weliesley College. 
J. H. Emerton, J.G. NEEDHAM, 
Boston, Mass. Cornell University. 
W. M. WHEELER, 
Harvard University. 

PsycHE is published bi-monthly, i. e. in February, April, June, August, October and 
December. 
Subscription price, per year, payable in advance: $1.00 to subscribers in the U. §. 
and its Territories and Dependences or in Mexico; $1.15 to those in other countries. 
Manuscripts intended for publication, and books, etc., intended for review should be 
sent to the editor-in-chief. All material for a given issue must be received before the 
first of the month preceeding the month of publication. 
To Contributors: 
Copy should be typewritten whenever possible, and must te legibly written on only 
one side of the paper. 
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: 
1 insertion 2 insertions one year (6 insertions) 
1 page $2.00 $3.00 $6.00 
Ye page 1.25 1.75 3.75 
14 page 75 1.10 2.25 
1-8 page 40 -60 1.20 
1-16 page «20 235 75 
Notices not to exceed four lines in length concerning exchanges desired of specimens 
or entomological literature will be inserted free for subscribers, to be run as long as 
may be deemed advisable by the editors. 
Exchange of publications with other scientific societies and institutions throughout 
the world which publish articles relating to entomology is desired. Requests for ex- 
change should be addressed to the editor-in-chief. 
Correspondence should be addressed to 
CAMBRIDGE ENTOMOLOGICAL CLUB, 
BussEY INSTITUTION, HARVARD UNIVERSITY, FOREST HILLS, 
BOSTON, MASS. 
Entered as second-class matter, Dec. 21, 1906, at the Post Office at Boston, Mass., under 
the Act of Congress of March 3, 1879. 
