CONTENTS 
PAGE 
Proceedings of the Pacific Slope Branch of the American Association of Econo¬ 
mic Entomologists 
Part 1, Business Proceedings 275 
Part 2, Papers and Discussions 278 
. Observations on a Fungus Enemy of the Walnut Aphis in Southern 
California.... 0. F> Burger and A. F. Swain 278 
Alternation of Hosts in Economic Aphids W. M. Davidson 289 
Cyanide Fumigation H. J. Quayle 294 
The Effects of Petroleum Oils on Mosquito Larvae 
S. B. Freeborn and R. F. Atsatt 299 
Notes on the < Beet Leaf hopper, Eutettix tenella 
H. FL P. Severin and W. W. Thomas 308 
Some Problems in the Control of Insects in Stored Foods in California 
R. W. Doane 313 
Fumigation Experiments: The Time Factor A. F. Swain 320 
A Native Food Plant of Rhagoletis fausta O. S. H. H. P. Severin 325 
Aphis bakeri and Some Allied Species C. P. Gillette and L. C. Bragg 328 
Biological Notes on Some Flatheaded Woodborers of the Genus Bu- 
prestis H. E. Burke 334 
The European Earwig, Forficula auricularia Linn. E. 0. Essig 338 
Storage of Manure and Fly Suppression at Durban Remount Depot 
(7. K. Brain 339 
Scientific Notes 341 
Editorial 343 
Current Notes 344 
