496 



JOURXAL OF ECOXOMIC EXTOMOLOGY 



Presidext Wilsox: The next paper will be presented by 'Mi\ 

 A. r. Burgess. 



SOME PHASES OF GIPSY MOTH WORK IN NEW ENGLAND 



By A. F. BrEGESS, Melrose Highlands, Mass 

 ■{WWidraicn for puhlication elsewhere.) 



Presidext Wilsox: We will now listen to a paper bv ]\Ir. E. D. 

 Ball. 



THE DISTRIBUTION OF THE BEET LEAF-HOPPER 



By E, D. B.^L, Logan, Utah 

 {With drown for puhlication elsewhere.) 



A general discussion followed this paper in regard to the leaf-hopper 

 transmitting the disease concerned and it developed that definite facts 

 concerning the transmission of the disease had been worked out under 

 laborator^^ and field conditions by Prof. R. E. Smith and his associates 

 in the University of California and would be published in a forthcom- 

 ing number of Phytopathology. 



Presidext Wilson: The last .paper on the program will be pre- 

 sented by ]Mr. G. X. Wolcott. 



THE INFLUENCE OF RAINFALL AND THE NON-BURNING 

 OF TRASH ON THE ABUNDANCE OF DIATR^A 

 SACCHARALIS^ 



By George X. Wolcott 



{Abstract) 



The most important insect injurious to sugar cane in the Western 

 Hemisphere is the smaller moth stalk borer, Diatraa saccharalis 

 Fabr., which occurs in abundance in the southern United States, 

 ]\Iexico, Cuba, Jamaica, Santo Domingo, Porto Rico, St. Kitts, 

 Barbados, Trinidad, Demerara, and Argentina, besides other islands 

 and countries of lesser importance in sugar production. 



The larvae of Diatrcea cause the injury to the cane, as they bore 

 into the stalks, eating the soft juicy pulp, opening the way for disease 



^ Published by permission of ^Ir. W. V. Tower, Director, Insular Kxperiment 

 Station, Rio Piedras, Porto Rico. 



