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ISSLY, D. (2449) 
1927. THE STRIPED "GIJCUMBEE BEETLE. Ark. Agr. Expt. Sta. Bull. 216, 
36 pp. [Abstract in Rev. Appl. Ent. (A) 16: 321-322. 1928.] 
ITicodust containing 4 percent nicotine kills many beetles 
( Diabrotic a vittata F.) at summer temperatures but is less effective 
in the spring, and the protection it gives is by no means permanent. 
ANONYMOUS (2450) 
1928. DIVISION OF ENTOMOLOGY, N. Y. Agr. Expt. Sta. Rept. 47 (1927- 
1928): 44-51. [Abstract in Rev. App n ., -Ent. (A) 17: 66-67. 1929.] 
The use o~? a 3 percent nicotine end dolomite dust in heavy 
dosages has ^oeea found to give the best control of the cucumber 
beetle (Diab rotica vittata Say), its efficiency, however, depending 
entirely on a thorough contact with the beetles. The lethal qualities 
of the dust were greatly increased by dry conditions. Arsenical 
dusts were less toxic to plant growth than nicotine dusts. 
HUCKETT, H. C. (2451) 
1929. A CONTRIBUTION TO THE STUDY OF CONTROL MEASURES FOR CUCUMBER 
BEETLES, DIABROTICA DUODEOIMPUNCTATA OLIY. AND VITTATA FABR. Jour. 
Econ. Ent. 22. 405-411. [Abstract in Chem. Abs. 23: 3535. 1929.] 
The effectiveness of nicotine-Lydrar,e:l lime dust for the spotted 
cucumber beetle ( Diabrotica duodecim o a 1 aetata) and the striped cucumber 
beetle (D. vittata ) depends on a relatively dry environment, on direct 
contact of the dust with the beetle and on a heavy application of the 
dust . 
(2452) 
10; 
1929. CONTROL MEASURES FOR CUCUMBER BEETLES. N. Y. Agr. Expt. Sta. 
Tech. Bull. 148, 82 pp. [Abstract in Rev. Appl. Ent. (A) 18: 16. 
1930.] 
Nicotine and hydrated lime dust and bordeaux mixture (2:6:50) 
were toxic to the beetles as well as active repellents, but their use 
on the main crop as insecticides was found to be impracticable on 
account of the necessity for heavy and frequent applications which 
caused severe injury to the plants. These tests were made against 
Diabrotica duodecimpunctata F. and D. vittata F. on cucumbers. 
BAKER, 17. 17. (2453) 
1928. DEPARTMENT OF ENTOMOLOGY. West. Wash. Agr. Expt. Sta. Ann. 
Rept. for Fiscal Year ending Mar. 31, 1928, Bull. 10-17. , n.s., 
pp. 13-16. 
Against the potato flea beetle ( Epitrix subcrinita ) on potato 
foliage nicotine dust gave excellent results. In one case a 2 percent 
nicotine dust with 1 lb. of lead arsenate to 9 lb. of lime burned the 
foliage of tomato plants. 
