ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE 
WHEN THIS PUBLICATION WAS LAST PRINTED 
SCCRCLOI) Of PAQTICIULUG C= a ee ee Henry A. WALLACE. 
WUT SC CREATAS nae we aie ect er See M. L. WILSON. 
AN SO SUCLUG ISG GIROULIPY [a Se Harry L. Brown. 
Coordinator of Land Use Planning and Di- M. S. EISENHOWER. 
rector of Information. 
I DRECUCTP OI FI OHA OSUCT. WAY OWA oe C. W. WARBURTON. 
I DURGORKCIE Oj) LOVE = ee ee W. A. JUMP. 
IDERGOUCEE OI; LBBRSOLU MW a ee Roy F. HENDRICKSON. 
IDGRQQUOIE Of SORA AG Vim Ss JAMES T. JARDINE. 
SOUCUL Gan A eas Ce ee MAstTIN G. WHITE. 
Agricultural Adjustment Administration___—~ H. R. Totiey, Administrator. 
Bureau of Agricultural Economics___—-_____— A. G. BLAcK, Chief. 
Bureau of Agricultural Engineering ___-__----- S. H. McCrory, Chief. 
ISAUGCOAL Of mANVINGl INOS ee ee JOHN R. MouteEr, Chief. 
IBUTCOM Of LOVOGLECL SULUCY === a IrA N. GABRIELSON, Chief. 
Bureau of Chemistry and Soils____-___-______ Henry G. KNIGHT, Chief. 
Commodity Exchange Administration________ Je Wa LS DUVEE, CNief. 
BURCH OOO InAs a= eee O. E. Rep, Chief. 
Bureau of Entomology and Plant Quarantine. Ler A. Srrone, Chief. 
Officerof La penimenteStOunonssa= = = JAMES T. JARDINE, Chief. 
HORN SCCUnUY: AGMINISITANON=a=—— = W. W. ALEXANDER, Administrator. 
Hood and Drug Admimistration=—_ WALTER G. CAMPBELL, Chief. 
TEOGES LES Ch UC Case eres en ae FERDINAND A. Sincox, Chief. 
BULeQl OO} HOME=E GONOMAGS. = = = = LOUISE STANLEY, Chief. 
JUDY ROUT) I SIE ae IS ee LE pl ee CLARIBEL R. BARNETT, Librarian. 
IBUTRCOUAO LON LAN OUS UG mae = oe ee ee EK. C. AUCHTER, Chief. 
PS ULCOU Of WOU C= OO WS == ws ee THOMAS H. MAcDOoNALp, Chief. 
SOURCONSCRUMLON=S ChUIGG === es H. H. BENNETT, Chief. 
WWCOTINC TSEC OUR se ee F. W. REICHELDERFER, Chief. 
This publication is a contribution from 
Bureau of Entomology and Plant Quarantine__._ Ler A. StTrone, Chief. 
Division of Insect Identification___________ C. F. W. MUESEBECEK, Principal 
Entomologist, in Charge. 
U.S. GOVERNMENT PRINTING OFFICE: 1939 
For sale by the Superintendent of Documents, Washington, D. C. - - - - - Price 10 cents 
