117 
3. Egg Plant. —At Godfrey, September 25, the leaves of egg 
plants were found badly riddled by a small flea beetle, Crepidodera 
yaeumeris, Harris. 
4. Larch. —In June, the foliage of the larches in the grounds of 
the* University at Normal, were seriously affected by the red spider 
(Tetranychus telarius, L.,) some of the trees seeming likely to die. 
On one of those worst infested we tried the effect of spraying with 
a kerosene emulsion made with soap, and diluted to contain two 
and a half per cent, of kerosene. The insects were greatly reduced 
in number by a single application, but not all killed. The trees soon 
revived appreciably as compared with those not treated. 
5 Willow.— The leaves of the willow at Normal were generally 
infested both in 1888 and 1884, by the larvae of Apatela oblinita, 
those collected July 6 pupating on the 11th and emerging on the 
29th. 
Orgyia leucostigma, Smith, was rather abundant on the willow in 
the University grounds at Normal. 
Larvae of Plagiodera lapponica, L., taken on the willow at Normal, 
June 24, commenced to pupate July 1, and to emerge on the 3d, 
the last of about sixty appearing on the 8tli. 
The adult, Crepidodera helxines, L., was found repeatedly through¬ 
out May in Central and Southeastern Illinois, devouring the leaves 
of willows and scarcely less commonly upon the Lombardy poplar 
and the balm of Gilead, doing decided injury to young trees m the 
nurseries. 
6. Cherry.— From my friend, Dr. E. R. Boardman, of Elmira, 
Stark county, I learned on the 9th June that the common willow 
slug ( Nematus ventralis, Say) had almost completely defoliated a line 
tree of wild cherry on his grounds. The species lias long been 
known as an enemy of the willow, but has not been heietotoie le- 
ported as injurious to any fruit tree. 
During this month of June the cherry slug ( Selandria cerasi. Peck) 
was especially abundant, completely whitening the leaves of many 
trees, and doubtless killing some. The efhcacy of hellebore for the 
destruction of this insect is well known, but as the use of so poi¬ 
sonous a substance is often unadvisable, we experimented somewhat 
carefully with two other insecticides—the kerosene emulsion and 
pyrethrum, a five per cent, dilution of the former, containing wo 
and a half per cent, of kerosene, and one ounce to a gallon ol the 
latter. We found these in both cases entirely effective, only a small 
percentage of the larvae treated escaping. 
7. Currant and Gooseberry.— The green apple leaf hopper ( Empoa 
dbopicta, Forbes,) was seen by us upon the currant and gooseberry 
at Normal, in numbers sufficient to do serious injury, causing the 
leaves to curl and shrivel. 
A number of leaf rollers of the currant, collected at Normal on 
the 12th May,—white, smooth, with sliming jet black head mouth 
parts, and cervical shield, prothoracic segment excep 
reddish with two oblong black tubercles upon the sld ®® °g th ' s s ® g ; 
fflent, the anterior legs black, tarsi of the otlieis dus y, S 
