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and die, and upon splitting them open he found a larva which had burrowed from 
the terminal bud toward the base of the branch, and this he pronounced to be the 
larva of the above-mentioned weevil. I strongly suspect, however, that it was the 
larva of the Tineid Arnarsia lineatella, which in the northern part of the State is 
known to have this habit. He informed me that his trees, which were set out the 
past spring, were obtained from an Alameda County nurseryman, so it is very prob- 
able that the eggs of the Anarsia were on the trees when he set them out. He has 
50 acres set out to peach, apricot, prune, apple, pear, and walnut trees and grape- 
vines, but the apricots suffered most from the attacks of this twig borer. He esti- 
mates that fully 800 of his apricot trees have been attacked by them, and on the greater 
pumber of these from four to six of the lateral branches had been destroyed. 
When he first sent me the weevils I advised him to spray his trees with Paris green 
and water, one pound to 180 gallons, and this he did, and informs me that it stopped 
the work of the twig-borers very effectually. When he saw a branch beginning to 
wither he at once removed and burned it, but he says that after applying the Paris 
green he did not find any more withered branches, and I could not find any at the 
time of my visit. 
On my way back I obtained a few of the weevils above referred to, but did not 
learn what their food-plant is.—[D. W. Coquillett, California, June 7, 1891. 
The Red-humped Caterpillar killed by Parasites. 
Will you please inform me what parasite it is that kills the caterpiller? I here- 
with inclose you dead caterpillars found in my orchard by the hundred. You will 
observe a hole in each worm, and I would like to know its enemy, not that I regret 
their destruction, but I would like to protecttheenemy. * * *—[B.L. Fetherolf, 
Pennsylvania, September 9, 1891. 
RepLy.—The larve sent is a common pest of the Apple, known as the Red-humped 
Caterpillar, the scientific name of which is Zdemasia concinna Abbotand Smith. The 
parasite which has infested all the specimens collected by you is a species that has 
been bred by the Entomologist from this same insect, and it hasrecently been described 
by Ashmead as Limneria edemasie. This parasite belongs to the family Ichneumo- 
nidz, and asecond parasite which also attacks this insect, but has not up to the 
present time been described is known to entomologists. The Limneria gives promise of 
being a very efficient aid in keeping @demasia in check.—[September 18, 1891. ] 
Treatment of Grain infested with Angoumois Moths. 
~ * * JTamvery anxious to get some information relative to Gelechia cerealella. 
I visited a farmer to-day and found his crop of wheat in asad condition. A large 
percentage of it is ruined already, and he was fanning it over to try to save it in 
that way. The pile of thrashed grain was very warm, and this was not caused by 
moisture, but through the effect of the insect. Upon examination this evening I 
find mine that was thrashed on the 10th instant is getting warminthepile. * * * 
[R. B. Farquhar, Maryland, September 14, 1891. 
RepLty.— * * * Nothing has been written or suggested as a means against this 
insect when infesting grain in shock in the field or in stack, and to reach the 
pest under such conditions would be a very difficult, if not impossible undertaking. 
It appears, however, to be feasible to destroy the larva by the same means that is 
employed against it in granaries, namely, the application of carbon bisulphide. To 
use this in the field in shocks or even in stacks would necessitate covering the 
stack or shock with a tent similar to the tent used in fumigating orange trees with 
hydrocyanic acid gas in-California, inserting the bisulphide into the body of the 
shock or stack by means of a long tin tube. This would be rather an expensive 
12201—No, 5——-4 
