BACK VOLUMES OF PSYCHE 
The Cambridge Entomological Club is able to offer for 
sale the following volumes of Psyche. Those not mentioned 
are entirely out of print. 
Volumes 2, 3, 4, 5, 6, 7, 8, 9, 10 ; each covering a period 
of three years, $5.00 each. 
Volumes 12, 14, 15, 17, each covering a single year, 
$1.00 each. 
Volumes 18, 19, 20, 21, 22, 23, 24, 25, 26, each covering 
a single year, $1.50 each. 
Volumes 27, 28, 29, 30, 31, 32, 33, 34, 35, each covering 
a single year, $2.00. 
Orders for 2 or more volumes are subject to a discount 
of 10%. 
Orders for 10 or more volumes subject to a discount 
of 20%. 
A set of all the volumes available (31 in all) will be sold 
for $61.00. 
All orders should be addressed to 
F. M. CARPENTER, Associate Editor of Psyche, 
Museum of Comparative Zoology, 
Department of Entomology, 
Cambridge, Mass. 
