mh 5 Ee 
cretion from the host larvae closes the wound. A day before the emer-— 
gence of the mature maggot the host larva is colored a glassy, trans— 
parent brown. The emergence hole is a narrow slit in the dorsal wallat 
the posterior edge of the second thoracic segment." 
Experiments conducted by J. C. Elmore, Alhambra, Calif., to de- 
termine the most satisfactory insecticide for the control of the pepper 
weevil (Anthonomus eugenii Cano) have given the following results: "A 
commercial barium fluosilicate (80 per cent) * * * burned the leaves 
and buds, stunted the plants, and caused them to turn yellow. The pods 
were smaller and fewer than in check plots. When this material was di- 
luted 50-50 with talcum there was the same type of injury, though less 
marked. One grower used barium fluosilicate on bell peppers, and six 
applications caused severe injury and stunting, although satisfactory 
pepper weevil control was obtained." Undiluted synthetic cryolite an- 
plied under the same conditions resulted in slight injury of the same 
general type, but without the clear-cut stunting and yellowing. "Def- 
inite injury by cryolite has been noticed in laboratory plots) ae 
Calcium arsenate has not shown a tendency to burn plants except where 
it has drifted onto plants already dusted with barium fluosilicate. 
These two materials together almost kill the plants. Undiluted potassium 
aluminosilicate was also used in field plots. Weevil control seemed 
very good and there was no greater injury than occurred in cryolite plots." 
W.C. Cook, Davis, Calif., writes that as a result of two trips 
over the San Joaquin Valley in search of summer breeding grounds of the 
beet leafhopper, "information has been accumulated showing that in all 
places in the foothills where large concentrations occurred this past 
spring there are summer breeding grounds within a very short distance. 
In every case these summer breeding grounds are larger this year than 
they were last year, owing mainly to a couple of late rains this spring 
which helped the weed vegetation. It seems quite possible that these 
summer breeding grounds on the west side are key areas which furnished a 
great majority of the overwintering leafhoppers." 
An effective barrier against mole crickets (Scapteriscus acletus 
R.H.) has been devised at Sanford, Fla., according to C. Fo 7Stamam 
"During August a barrier of celery paper was placed around a 3-acre plot 
on the Rex Packard farm. * * * The paper was 12 and 10 inches wide and 
was placed in the ground to a depth of from 4 to 6 inches. The plot 
was then baited and the infestation almost eliminated. The heaviest in- 
festation was on the east side of the barrier. It was soon evident that 
the barrier was effective, as indicated by the amount of burrowing on 
the outer side. The crickets would work up to the paper, where they were 
stopped. The paper did not, however, stand up well in the soil. After 
a period of two weeks the portion in the soil was rotting badly. It was 
apparent, nevertheless, that a barrier no more than 6 inches in the ground 
is effective in stopping the crickets under the conditions in which 
it was tried." 
S. E. Crumb, Puyallup, Wash., reporting on results obtained in 
baiting city blocks for the European earwig, says: "It will be noted 
Ss ——  Y 
