369 
seales, and the resin wash, in the absence of immediately following 
rains, against the full-grown insects. Similar operations have been 
begun at Neavitt, Md. In Indiana the scale was confined to a very 
few trees, and these were destroyed by cutting down and burning. In 
the only locality in Pennsylvania with which we have had direct corre- 
spondence, the scales were also destroyed by burning the trees. In 
New Jersey, as we learn from Prof. John B. Smith, kerosene emulsion 
has been used successfully, both prior to the hatching of the young 
and subsequent thereto. 
STRUCTURAL CHARACTERS OF THE INSECT. 
A careful study of the life-history of the insect is being carried on in 
the Insectary of the Division. For the purposes of this article it will 
Fic. 29.—San José Scale: male adult—greatly enlarged. (From Cireular No.3, Div Ent.) 
be sufficient to republish the figures of the adult male and of the adult 
female, removed from the scale. These are shown, respectively, at 
Figs. 29, 28, and 26 a. 
COMPLETED LIFE-HISTORY OF THE SUGAR-BEET WEB-WORM. 
(Loxostege sticticalis L.) 
By L. O. Howarp. 
In the Annual Report of this Department for 1892 Prof. Riley gave, 
on pages 172 to 175, some account of the occurrence of this insect in 
injurious numbers in sugar-beet plantations in Nebraska, his attention 
having been called to it by the agents of the Division of Chemistry 
