VI SOME INSECTS INJURIOUS TO TRUCK CROPS. 



author, Mr. H. M. Russell, a series of 15 trials was performed, proving 

 that a spray of arsenate of lead is far superior to Paris green under local 

 •conditions. The final article of the series, entitled "The hop flea- 

 beetle," has been a subject of study for a number of years. Its 

 treatment is monographic to date, and, while some of the data fur- 

 nished are preliminary in character, it will constitute a basis for future 

 work on the same species. This insect is given the name of flea-beetle 

 because of the local name, "hop flea," used in the hop-growing region 

 of the Pacific coast, but it is also a pest in sugar-beet fields and injuri- 

 ous to rhubarb, radishes, and other truck crops. In the preparation 

 of the article the writer has been fortunate in obtaining the coopera- 

 tion of various experts, including, particularly, Messrs. H. J. Quayle 

 and Theodor Eder. 



Following this article are a few miscellaneous notes on truck-crop 

 insects, the first two giving additional information in regard to the 

 principal asparagus pests treated in Part I, the last furnishing addi- 

 tional observations on the water-cress insects treated in Part II, with 

 notes on the first injurious occurrence of the destructive pea moth 

 and of a western root-maggot in the United States. 



F. H. Chittenden. 



