" CENTRAL KAhN. Y> 



CONTENTS. 



Newcomb— Chrysophanus dorcas and related species in Michigan 15.; 



Graenicher— Wisconsin Bees, new and little-known species 157 



Swaine — Notes on a few Scolytidas '61 



Zimmer — Two new species of Pentatomidse from Nebraska 166 



Busck — A Gelechia inquilinous in Cecidomy iid Galls i68 



Obituary : 168 



Cockerell— Some new American Bees 169 



Cockerell — A new Aleyrodes on Bearberry i?' 



Rohwer — Notes on Tenthredinoidea — Part X 172 



Bueno^Life-histories of N. American Water-bugs— III 176 



Book Notice — Needham's General Biology 187 



EDITED BY 



DR. E. M. WALKER. 



BIOLOGICAL DEPARTMENT, 

 UNIVERSITY OF TORONTO, TORONTO. 



Editor Emeritus : REV. C. J. S. BETHUNE. 



MAY, 1910. 



LONDON: 



LONDON PRINTING AND LITHOGRAPHING COMPANY. 



1910. 



