528 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 17 
The session adjourned at 12:10 P. M. 
Afternoon Session, Thursday June 27, 1924 
After viewing two interesting and instructive motion pictures on 
Forest Insect Control and Malaria and the Mosquito, the meeting was 
called to order by Chairman H. S. Smith, and the following papers 
presented: 
EXPERIMENTS ON THE EFFICIENCY OF LEAD ARSENATE 
IN PROTECTING APPLES AGAINST CODLING MOTH INJURY 
By Ralph H. Smith, Berkeley, California 
(Paper not received) 
STUDIES OF PARASITES OF THE ALFALFA WEEVIL 
IN EUROPE 
By T. R. Chamberlin, TJ. S. Bureau of Entomology, Salt Lake City, Utah 
(Paper not received) 
Chairman H. S. Smith. We will now call on Mr. Packard to read a 
paper by W. B. Turner. 
Mr. C. M. Packard. This paper was prepared to record the last 
work done by Mr. Turner prior to his fatal illness. 
THE TULE BILLBUG 
By W. B. Turner , 1 Scientific Assistant, U. S. Department of Agriculture, 
Bureau of Entomology 
Abstract 
The adult Tule Billbug sometimes injures small grains in California by eating 
into the stems near the head. The immature stages have been found only in the 
rootstocks of the tule. There is only one annual generation. The eggs are laid in 
spring and in early summer, in the mud surrounding the tule roots and sometimes in 
the tule stems. They hatch in 10 to 13 days. The larvae burrow in the rootstocks 
during summer and fall, pupating in cells formed at the end of their burrows in fall 
or early winter. Some change in about 20 days to adults which hibernate in the 
pupal cells and some hibernate as pupae. Adults emerge in spring and are abroad 
until late summer. They are strong fliers. Eradication of the tules is the only known 
means of control. 
x The writer wishes to acknowledge with thanks the material assistance of Messrs. 
C. M. Packard and B. G. Thompson in securing the information upon which this 
paper is based. 
