HICKORY CATERPILLARS. 307 
forests of hickory and chestnut and were doing much damage to the 
fruit trees. The principal damage done by these insects at the North 
has been to the shade trees in the large cities, notably New York and 
Philadelphia. In these localities there is but one brood in a year, the 
worms hatching in early spring and feeding upon the leaves until 
towards the end of June, when they spin up between the leaves. The 
moths issue in a week, pair, and lay their eggs upon the trunk and 
twigs of the tree, where they remain until the following spring. The 
worm is an inch and a half long and nearly black in color. The moth 
is pure white in color and has a wing expanse of an inch and a half. 
As was evinced by reports received by Mr. Davenport, and by the 
fact that many of the eggs received were deposited upon leaves, there 
is evidently more than one brood each year in Georgia. The eggs were 
l mm long, half as wide, of a yellowish-brown color, and were placed upon 
end in small patches. As to remedies, it will prove a very difficult in- 
sect to fight in forests ; but upon ornamental trees and shrubs and upon 
fruit trees it will not be difficult to destroy it. The former can easily 
be syringed with Paris green and water, from a garden syringe or 
fountain pump. With the latter it will be necessary to jar the trees in 
mid-day, or in warm sunshine, when the worms are most active. The 
shock will cause nearly all to drop, suspended by a silken thread; then 
by using a pole they can be brought to the ground and destroyed by 
crushing. In forests, however, 1 can see no means of getting rid of 
them, unless it should prove that the moths are readily attracted by 
light, in which case much good could be accomplished by building fires 
at intervals during the time of flight. (Comstock's Report for 1880, p. 
271). 
For descriptions of the moth and its preparatory stages see p. 232. 
66. Eagonia alniaria Hiibner. 
The larva of this species occurred at Providence in June, in its sec- 
ond stage of growth on Carya porcina and Juglans nigra. I sent it to 
Miss Sanders, who states that it molted July 9, again on the 16th, and 
for the last time July 24, spinning August 9 a beautiful loose web of 
silk like open lace, within the web hanging the inner oval hammock- 
like cocoon of close texture, thin and fine. The female emerged Au- 
gust 31. 
Mr. L. W. Goodell has raised it from the chestnut at Amherst, Mass., 
August 20. He describes the caterpillar as " bluish-green, with a thick 
wrinkle on each ring, those on the fifth and eighth thickest and light 
brown; on the back of the eleventh ring are two little warts tipped 
with brown." Length, 2.3 inches, the body largest near the tail' and 
tapering to the head. August 21 it drew a few leaves together and 
spun a thin pear-shaped cocoon, pupated the 24th, the moth issuing Sep- 
tember 13. 
