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Injurious Insects of 1891 in Colorado.*—Prof. C. P. Gillette, in Bulletin 
No. 19 of the Colorado Agricultural Experiment Station, has published 
a careful and well-illustrated series of articles upon a number of inju- 
rious insects which have appeared during the past season in the State 
to which his labors have been transferred. A number of the insects 
treated are more or less novel, which renders the bulletin more interest- 
ing to the economic entomologist than are the generality of such papers. 
The species treated are the Fruit-tree Leaf-roller (Cacecia argyrospila 
Walk.), a Tortricid moth which has done serious injury to the buds of 
Apple, Cherry, Rose, Currant, Raspberry, and Gooseberry; the Box- 
elder Leaf-roller (Cacecia semiferana Walk.); the Grape-vine Leaf-hop- 
per (Lyphlocyba vitifer ? Fitch); the Gooseberry Fruit-fly (Trypeta 
canadensis Loew); the Imported Currant Borer (Sesia tipuliformis 
Linn.); the Western Currant and Gooseberry Span-worm (Thamnonoma 
4-linearia Pack., and JT. flavicaria Pack.); the Spotted Bean-beetle 
(Hpilachna corrupta Muls.); the Squash Root-maggot (Cyrtoneura stabu- 
fans), and the Pea-weevil (Bruchus pisi). The illustrations are twelve 
in number and arealloriginal. The most interesting article, perhaps, is 
that upon Hpilachna corrupta, which we have frequently mentioned in 
these pages as doing considerable damage to beans in New Mexico, from 
which locality it has been reported by our old-time friend and corre- 
spondent Judge J. F. Wielandy. According to Prof. Gillette it is a most 
important enemy of the Bean in Colorado. No experiments have been 
made with remedies against this species, but the gathering of the eggs 
and the use of the arsenites and kerosene emulsion are recommended. 
A Bulletin of the Oregon Station.t—Bulletin 18, of the Oregon Experi- 
ment Station, by Mr. F. L. Washburn, has appeared. It is somewhat 
of an emergency publication and designed particularly to meet the 
wants of fruit-growers. The subtitles are as follows: Insects injurious 
to young Fruit Trees, the Codling Moth, Kerosene Emulsion, Wire- 
worms, and Flea-beetles. Many of the species here considered were 
discussed somewhat more at length in Bulletin No. 5 of the same sta- 
tion, and a detailed list need not be given here. 
We quote the following notes concerning the comparative value of 
the kerosene emulsion and extract of quassia for the Hop Louse: 
Prof. C. V. Riley, United States Entomologist, recommends this emulsion for the 
Hop Louse, 1 part emulsion to 25 parts of water, and it has proved of great benefit 
in this direction. : 
In Bulletin No. 10, from this Station, kerosene emulsion, 1 part to 30 parts water, 
was recommended as a good spray for the hops, and for plum trees in the spring, 
before the louse had migrated to the hops. 
*State Agricultural College, Agricultural Experiment Station. Bulletin No. 19. 
Observations upon Injurious Insects, Season of 1891. Fort Collins, Colo., May, 1892. 
tOregon Agricultural Experiment Station Bulletin No. 18. Entomology. F. L. 
Washburn, Entomologist. Corvallis, March, 1892. [pp. 16, figs. 14.} 
