26 
thoroughly on top. Then I turned the bran over and sprinkled it 
thoroughly again, and continued to do that, sprinkling and turning 
until the bran was moist throughout. I then took Paris green and 
sprinkled it all over the bran. Iturned that over and sprinkled another 
layer of Paris green, and kept turning and sprinkling until the Paris 
green was thoroughly incorporated with the bran. I then took it and 
spread it lightly on the ground where the white grub was, and in the 
course of two or three days I might say I completely eradicated it.” 
NOTES ON CUCUMBER BEETLES. 
By F. H. CHITTENDEN. 
During the year 1897 very general complaint was received at this 
office of an insect that destroyed the vines of cucurbits near the roots, 
and in most instances Diabrotica vittata, the striped cucumber beetle, 
was responsible for a major portion of the injury. This species was 
observed in its different stages, and some notes were made on its habits 
Fic. 7.—Diabrotica vittata: a, beetle; b, larva; c, pupa; d, anal segment, from side; all enlarged to 
same scale except d, which is more enlarged (original). 
and life economy. Diabrotica 12-punctata, the so-called twelve-spotted 
cucumber beetle, or Southern corn root-worm, also came under observa- 
tion from its association with the above-mentioned species. 
All of the observations which will be recorded were made in the 
District of Columbia or in Maryland near the District border line. 
THE STRIPED CUCUMBER BEETLE. 
(Diabrotica vittata Fab.) 
Recent injury; food plants.—Injury to cucumber, squash, and cante- 
loupe by this species is so well known and has been so general in Mary- 
land and Virginia in the vicinity of the District of Columbia in recent 
years that special mention of infested localities is superfluous. Indeed, 
this cucumber beetle is rarely absent from the farm and garden over 
an area which embraces nearly our whole country, and is by far more 
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