Issued Aug. 15, 1917?'^*'*^- 



U. S. DEPARTMENT OF AGRICULTURE, 



OFFICE OF THE SECRETARY 



CONTRIBUTION FROM THE BUREAU OF ENTOMOLOGY, L. O. HOWARD, CHIEF, 



IN COLLABORATION WITH THE FEDERAL HORTICULTURAL 



BOARD, C. L. MARLATT, CHAIRMAN. 



A MANUAL 



OF 



DANGEROUS INSECTS 



LIKELY TO BE INTRODUCED IN THE 



UNITED STATES THROUGH 



IMPORTATIONS. 



EDITED BY 



■Z 



^^^vS 



W. DWIGHT PIERCE, 



Entomologist, Southern Field Crop Insect Investigations. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1018. 



