580 General Notes. [June 
them upon corn-roots exposed in glass tubes until all question 
of their specific character is removed. e also find that the 
but, like so many other insects at this season, the ants probably’ 
Exposition of Insects.—There will be held in Paris, begin- 
ning on the 27th August and lasting until 28th September, 
1887, an exposition of useful insects and their products, and of 
Entomological News.—Mr. L. O. Howard gives, in the 
Transactions of the American Entomological Society, vol. xiii. 
: Dr. Gustav Mayr publishes a paper on the 
ants of the United States of America, in the Verh. k. k. Zo0l,-Bot. 
_ Ges. in Wien, pp. 419-468. This paper is a synonymical and 
_ descriptive list of forty-eight pages, in which one hundred and 
- ——Dr. Riley has published Bulletin No. 10 of the Division of 
: : Entomology, U.S. Dept. Agr., entitled “Our Shade-Trees and 
their Insect Defoli i 
| a i tia sits ch affect the trees of the Capital, with means 
. 
efoliators, being a consideration of the four most. 
J 
them.” 2 The imported elm-leaf-beetl the bag: 
