ang 
SOUTHERN FIELD CROP INSECT INVESTIGATIONS. 
J. Le Webb, Entomological Assistant Acting in Charge, 
Dr, We D. Hunter spent a {9% cays in Washington during the early: part of 
the month, A. C. Morgan and W, Vy King were here at the same time for confer= 
ences, ; 
W, H, Dumont has been transferred to the laboratory at Mound, La, 
EB, A. McGregor has left the service of the Government to engage in 
private business, 
B, R. Barber will 
of collecting and shippin 
moth borer, 
W, D, Pierce left Washington on March 15 for a trip to the Imperial 
Valley, Cal, 
F, L, McDonough, having been mustered out of the Army, has been rein-= 
stated in the Bureau and assigned to the tobaceo insect laboratory at Quincy, 
Fla, 


leave soon on an extended trip to Cuba for the purpose 
@ to “the United States parasites of the sugar-cane 
S, & Crumb is spending several weeks in Washington for the purpose of 
working up his cuvworm material, 
W,. &, Dove has been mustered out of the Army and reinstated in the 
Bureau, He is to take up extension work in insects injurious to domestié 
animals, a ees attention being paid to horse bots, ; 
I extension agent, working in insects injurious to domestic 
animals, has finished his work in Maryiand and taken up the work in Indiana, 
FOREST INSECT INVESTIGATIONS. 
A, D, Hopkins, Forest Entomologis., 
F. C, Craighead has pitta from a recent trip into western Florida 
where he was investigating, among other thins the protection of storm-felled 
pine timber from insect damace, Pu magnitude of the problem may perhaps be 
realized when it is learned that one concern alone was threatened with the loss 
of about 100 million feet of storm-felled timber, which, appraised at about five 
dollars per 1,000 feet, would represent a loss of about $500,000. As a resultéof 
of this investigation it was found possible to salvage a large percentage of thi 
timber by converting it into lumber before the borers destroy the sapwood, The 
remainder is being conserved in the heartwood for utilization as cross-ties, 
The heartwood does not decay for several years, so that it can be worked up at 
leisure, 
T, E, Snyder returned to.Washington, D, C,, on March 13, after @ trip) 
to southern Florida, An examination of the Casuarina plantations at Miami Beach 
Florida, shows that there is a great decrease in injury in 1919 by the mangrove 
borer (Chrysobothris tranquebariva Gmel.), Many of the trees that were so seri= 
ously injured in 1916 when { they \ were young have now reached an‘ age and $1i2e when 
they are no longer liable to injury, Nevertheless, other trees of all sizes hav 
been planted and are being planted and even these trees do not show as much in= 
jury as in 1918, On March 1, 1919, CG, tranquebarica was in the mature larval 
stage under ee and in pupal cells at Miami Beach, Fla. 
In the mangrove swanps near by, the iniury ie the red mangrove trees is 
still severe pe many small and even large trees are being killed, the latter 
gradually, There is a discussion of this injury and the control work in the 
