Bulletin No. 4.— New Series, Revised Edition. 



U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



THE PRINCIPAL 



HOUSEHOLD IISTSECTS 



OF THE 



UNITED STATES. 



BY 



li. O. HOWARD A:N^r> C. L. 3IARI.ATT. 



WITH A CHAPTEU OX 



INSECTS AFFECTING DRY VEGETABLE FOODS. 



F. H. CIIITTEXDEX, 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE 

 1896, 



