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88 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
leaves. This should be done as soon as the larvee are noticed upon the 
foliage, as all from each cluster of eggs will then be in a single group, 
whereas, if the treatment be deferred until the larvee have separated 
into individuals or small groups, as mentioned before in this paper, 
much more labor will be involved. 
An arsenical treatment, applied as soon as the larvee are in evidence, 
would prove effective. Two applications are necessary, one for each 
generation of the larve. The time of application will vary greatly, 
being early in the South and becoming later in northern States, ac- 
cording to the time the larve appear upon the grapes, which is the 
best standard for determining when the treatment should be applied. 
The arsenical used may be either arsenate of lead, Paris green, or 
arsenite of lime. Arsenate of lead is preferred on account of its bet- 
ter sticking qualities, and also because it is less likely to injure the 
foliage. Three pounds of any good brand of the latter added to the 
ordinary Bordeaux mixture (5-5-50 formula) will make a very effi- 
cient remedy. 
Since the larve spin their cocoons in the leaves and trash at the 
bottom of the vines, clean culture is to be recommended. Where 
clean culture is followed, and where spraying is practiced for the 
erape-berry moth, grape root-worm, and grape curculio, this insect 
need never be feared. 
BIBLIOGRAPHY. 
The following bibliography contains practically all of the liter- 
ature on LHarrisina americana. All of the articles have been seen 
and verified, except where mention to the contrary is made. 
1832, GrirFItTH.—Agloape americana Boisd.<Cuv. Reg. Lep., p. 84 bis., fig. 11. 
Figured but not described. 
18338. Hargis, T. W.—Procris dispar.<Cat. Ins. Mass. (Not seen.) 
1836.. BorspuvAL, J. A.—Procris americana. <Sp. Gen. Lep., I, p. 16, fig. 7. 
Figured but not described. 
1837. HenpEerson, G.—Agloape americana.<Cuv. Reg. An., Vol. IV, Pl. 1, fig. 
ni 
Figured but not described. 
1839. Harris, T. W.—Procris americana. Cat. N. A. Sphinges. <Silliman’s 
Journ. Sci., vol. 36, p. 282. 
Figured and described for first time. 
1844. GuiétRIN-MENEVILLE, F. E.—Agloape americana Boisd.<Icon. Cuv. Reg. 
An., Vol. III, p. 501, 1829-1888 (1844). 
Figured and described. 
1844, Harris, T. W.—Procris americana Boisd.<Hovey’s Mag. Hort., June, 
1844, Vol. X, pp. 201—205. 
First economic reference and general account of life history and habits. 
1854. WALKER, Francis.—Ctenucha (Agloape) americana Boisd. <Cat. Lep. 
Brits. Musso. Ui apse286: 
Description. 
1855. GLover, TowNnEeND.—Procris americand.<Agric. Rep. U. S. Com, Pat- 
ents (1855), pp. 59-88, 
General account, 
