Advertisements 
The Canadian Entomologist 
A Monthly Magazine Devoted to the Study of Scientific Entomology 
Volume 46 is now in course of publication. It is the oldest established maga- 
zine of the kind in America and has a world-wide circulation. Subscription $2.00 
per annum, payable in advance, which includes a copy of The Annual Report of 
the Entomological Society of Ontario to the Legislature. Editor, Dr. E. M. 
Walker, Biological Department, University of Toronto, Toronto, Canada. 
Published by the Entomological Society of Ontario, 
GUELPH, CANADA 
The Entomological Exchange 
Opened for the purpose of meeting a demand for centraliza- 
tion of exchange of Lepidoptera with reliable collectors in all 
parts of the world. Will exchange hibernating eggs, pupe 
and imagos, also well inflated larvae accepted. For further in- 
formation in regard to method of exchanging, address with 
return postage, 
(Note new address) 
THE ENTOMOLOGICAL EXCHANGE 
75 MAPLE STREET, WEST ROXBURY, MASS. 
PSYCHE 
The Cambridge Entomological Club has a number of 
single volumes of Psyche for sale, and can furnish one 
set complete, except for Vol. XIII, which is entirely 
out of print. 
Volumes II-X (each covering a 3-year period), each. . . $3.00 
Volume XII (covering a single year), rt at alae we eOO 
Volumes XIV-XV and XVII Sal. 2%, ae OU 
Volumes XVIII-XX Genie ree a OO 
Address all orders or inquiries to 
Editor of Psyche, Bussey Institu- 
tion, Forest Hills, Boston, Mass. 
Write before sending money, as the supply of some volumes is low. 
