312 JOURNAL of economic ENTOMOLOGY [Vol. 11 
Tall pepper grass (.Lepidium medium), 3 miles south of Imperial, January 23; 
Calipatria, March 15, 1918. 
Cheese weed (Malva parviflora), Calipatria, March 15, 1918. 
Poverty weed (Jva axillaris), Calipatria, March 15, 1918. 
It may be possible that the beet leafhopper was not feeding on all 
of the plants listed, but that the vegetation simply served as a resting 
place. Near Manteca, on February 11, a single adult was captured on 
bamboo which served as a wind break. The foliage of bamboo was 
swept with an insect-net during an entire afternoon but not another 
specimen was taken. 
During the winter in the Imperial Valley, nymphs of E. tenella were 
found on the lowland or sea purslane ( Sesuvium sessile), Australian 
salt bush (Atriplex semibaccata) and nettle goosefoot ( Chenopodium 
murale). Nymphs collected on the Australian salt bush at El Centro 
on January 22, transformed into adults on January 30. To determine 
whether eggs had been deposited on Sesuvium sessile and Atriplex semi¬ 
baccata under natural conditions, pieces of the plants were shaken over 
a black back ground at intervals for several days so that there was no 
question of doubt that neither an adult or nymph was present on the 
vegetation. The plant was then placed in a card board box with a 
hole at one end opening into the mouth of a phial. For a period of 
ten days, nymphs hatching from eggs deposited in both species of 
plants were found in the phials. 
Conclusion 
In the cultivated districts of the Imperial Valley, E. tenella has been 
found in large numbers on the Australian salt bush (. Atriplex semi¬ 
baccata) in January and March, and the lowland or sea purslane 
(Sesuvium sessile) in March. The pest is breeding on these two plants 
under natural conditions. No complete hibernation occurs in the 
Imperial Valley. 
We are deeply indebted to members of the botanical department of 
the University of California for the determination of the plants men¬ 
tioned in this paper. 
President G. P. Weldon: The next paper is entitled “Some Prob¬ 
lems in the Control of Insects in Stored Foods in California,” by. 
R. W. Doane. 
