248 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 12 



reports from Japan class it as doing more general damage than any 

 other species of the coleoptera in the Islands. 



In New Jersey it has seemingly not lost its reputation as a pest. 



From the survey made by Mr. W. O. Ellis, after the 18th of August, 

 1917, the range of territory occupied by this beetle was about 2,500 

 acres. This does not mean that the pest was actually established over 

 this entire area, but beetles were collected at various points over an 

 area of this extent. 



Upon my arrival, May 1, 1918, the only equipment available for 

 eradication work was a small cart sprayer, a barrel sprayer and two 

 large Dl Model Niagara dusters and a ton of arsenate of lead. 



Working plans were necessary and were prepared after carefully 

 looking over the territor}^ and the conditions which would be 

 encountered. 



Plans 



First : To test soil f umigants and choose the best suited for the exist- 

 ing conditions. Procure the same in a sufficient quantity to treat all 

 territory heavily infested with the larvae of the Japanese flower beetle 

 to destroy them. 



Second : To place trap lights throughout the central portion of the 

 district to trap the beetles. A translation from the life history, as 

 given in the Japanese writings, states that they are caught by setting 

 a lighted lantern in a pan of petrol. 



Third: To destroy all uneconomic plants in so far as possible in a 

 band around the infested territory, band to be about one half mile wide. 



Fourth: To dust all food plants with poison, especially a broad band 

 of territory surrounding the central portion of the infested district. 



Fifth: To collect as many beetles as possible in nets. 



Sixth: To test cultivation throughout the season and late fall 

 plowing to determine its effect on the larvse. 



The plans for eradication work encountered many difficulties from 

 the beginning. The equipment needed included a large sprayer, two 

 large dusters, a tractor, a light truck, and necessary machines to get 

 around over the territory and transport men and materials wherever 

 required. 



Intelligent labor of the type needed was difficult to secure. Horse- 

 power was at a premium and very difficult to obtain at the times most 

 needed. 



A larval survey was necessary in order to determine the areas which 

 should receive soil treatment to destroy the larvse, meanwhile experi- 

 ments were under way testing the efficienc}^ of various soil fumigants. 

 Sodium cyanide at the rate of 1 ounce in 15 gallons of water distrib- 

 uted over twenty-five square feet of ground gave the best results. 



