PSYCHE 



Editor-in-Chief and Publication Manager, W. L._ W. Field; 

 Associate Editors, C. B. Davenport, J. H. Emerton, V. L. Kellogg, 

 C. W. Johnson, A. P. Morse, J. G. Needham. 



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. S. and its Terri- 

 tories 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 

 tlie first day of the month preceding the month of publication. 



All correspondence should be addressed to 



CAMBRIDGE ENTOMOLOGICAL CLUB, 



Care Boston Society of Natural History, 



BERKELEY STREET, 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. 



