Metals Penetrated Metals not Penetrated 
1. Aluminum 1. brave 
z. Lead As Sooper 
3. Monell 
4. Nickel 
a 
6. Zine 
William Middleton, of this office, recently returned from New Yor 
where he met the Fabre Liner Previdence, on which was a shipment of parasi- 
tized elm leaf-beetles from Dr. W. R. Thempson, in Wrance. An ettempt is 
to be made to establish the diptercus parasite, Erynnia nitida R. D., of 
the elm leaf-beetle in this country. 
TRUCK-CROP. INSECT INVESTIGATIONS 
J. E. Graf, Entomologist, in Charge 
B. L. Boyden, Associate Entomologist, in charge of the Tampa, Fla., 
laboratory, investigated an outbreak of the fall armyworm on a goif course 
at St. Petersburg, Fla. Specimens have been identified as Laphyzue, Lrpri- 
perda §. &A. é 
R. B. Campbell, Associate Entomclegist, in charge of the Alhambra, 
Calif., laboratory, visited points in Oregon and Washington to investigate 
the Wireworm situation. He conferred with: State officials at Corvallis, 
Oreg., and with Bureau officials at Toppenish, Wash. 
J. R. Douglass, Assistant Entomologist, in charge of the Hstancia, 
N. M., laboratory, visited Douglas, Ariz., to make a survey of a cucurbit 
pest in that vicinity and to determine whether the pest in question is 
Puitachna borealis or H. corrupta. The species has been tentatively deter- 
mined as a western form of HE. borealis. 
‘ Dr. F. A. Fenton, of the Bureau's boll weevil laboratory at Florence, 
8. C., visited the Baton Rouge, La., laboratory during the middle of Sep- 
t rand conferred with Bureau and State officials. 
2 
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Ww 
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J. EH. Dudley, Associate Entomologist, in charge of the Madison, Wis., 
; ted points in Kansas and Missouri to confer with officials 
Yeon. pastng hea 2 . * 7 . 
tesirdaing the pea aphis situation and the development of the aphidozer. 
he 2 wae 5) ; + : . 
__ + &. Moore, R. H. Garrahan, and M. L: Reutenik, representatives of 
bbe Wegeusule Coowers Association of America, recently visited the Bureau 
aula discussed insects affecting greenhouse vegetables and their control. 
i 
