New Yoek Agricultural Experiment Station. 269 



in keeping the beetles away. AYlien plants were examined, the 

 day following the treatment, the beetles were found feeding on the 

 plants, and when disturbed, they hid themselves in the tobacco 

 dust at the base of the plants. (These were Long Island " cuck " 

 beetles.) Possibly a good quality of snuff would be more effec- 

 tive than tobacco dust, but it would be an expensive remedy. 



Koad-dust, ashes, soot, charcoal, salpetre, cow-manure, hen- 

 manure, burdock infusion, slug shot and " bug death " are a few 

 of the numerous measures often recommended which have no 

 value except to frighten the beetles away from the plants at the 

 time they are applied. 



CONCLUSION. 



From what has been given regarding the habits of the striped 

 beetle, and the results of tests of different remedies, it will be 

 seen that no one measure will give absolute protection to the 

 vines of cucumber and melon. Purthermore, it will be seen that 

 if Paris green, green arsenite or in fact any of the arsenites are 

 used with Bordeaux mixture or with air-slaked lime, with the ex- 

 pectation of killing the beetles, they will be failures. Hence, I 

 recommend the use of squashes as a lure and as a poisoned bait, 

 combined with the use of Bordeaux mixture on the cucumber vines, 

 and in some cases, also combined with the use of covers. I also 

 recommend the planting of squashes or beans in September for 

 the purpose of poisoning as many of the beetles as possible during 

 the fall. Green arsenite and Paris green can be, and frequently 

 are, used with water for poisoning the squashes and beans, but as 

 the object of the latter is to kill as many of the beetles, in as short 

 a time as possible, it is better to use the arsenites dry, for the 

 simple reason that they can be applied stronger and not kill the 

 vines as quickly as when used with water. 



