December, ’23] 
PACIFIC SLOPE PROCEEDINGS 
485 
showed 178 dead Jassids, including the beet leaf hopper, which had died 
as a result of a fungus disease. In regions outside of the fog belt, how¬ 
ever, no dead fungus diseased insects were found, and near Los Alomos, 
nymphs and adults were abundant in the badly blighted beet fields. 
In the Salinas Valley, no dead fungus diseased leafhoppers have been 
found in the fog belt and there are other factors which reduce the 
numbers of the second generation. The summer brood hoppers, how¬ 
ever, gradually increase in numbers toward Gonzales, situated near the 
limit of the fog belt. In Berkeley it was frequently observed that 
nymphs upon hatching out-of-doors in cages failed to extricate them¬ 
selves from the eggs and died in a day or two. A high mortality of the 
nymphs occurs in the fog belt of California, depending upon the dis¬ 
tance from the ocean. The nymphs of the second brood do not acquire 
the winged stage until autumn. Movements associated with mating of 
the second generation occur at a time when the beets are large enough to 
withstand the attacks of the leafhoppers. Such factors as a late de¬ 
veloping second brood and this generation greatly reduced in numbers, 
make it possible to grow a crop of beets in the fog belt of the Salinas 
Valley when planting is delayed until after the spring dispersal of the 
beet leafhoppers has occurred. The limit of beet growing in the fog 
belt as far as curly leaf is concerned varies from 20 to 30 miles in Cali¬ 
fornia. 
X. Bibliography 
1. Ball, E. D., 1917. The Beet Leafhopper and the Curly Leaf Disease that It 
Transmits. Utah Agr. Exp. Sta., Bui. 155, pp. 1-56. 
2. Schwing, E. A. and Hartung, W. J., 1922. Utilization of Systematic Observa¬ 
tions on Beet Leafhopper (Eutettix tenella Baker) and Curly Leaf of Sugar 
Beets. Jour. Econ. Ent. XV, No. 5, pp. 365-368. 
3. Stahl, C. F., 1920. Studies on the Life History and Habits of the Beet Leaf¬ 
hopper. Jour. Agr. Res. XX, No. 4, pp. 245-252. 
The papers were fully discussed by the author, C. F. Stahl, E. Carsner 
and many of the members. 
Following announcements concerning the excursion on Tuesday after¬ 
noon and the banquet on Wednesday night, the chairman adjourned 
the meeting until the following morning. 
Morning Session , September 18 , 1923 
The meeting was called to order by Acting chairman R. E. Campbell 
who announced that because of the serious fire in Berkeley many of the 
Berkeley delegates, including the secretary, had returned to Berkeley 
on the night train. 
