U. S. DEPARTMENT OF AGRICULTURE, 



division of entomology. 



Bulletin No. 30, 



REPORTS 



OF 



OBSERVATIONS AND EXPERIMENTS 



IN 



THE PRACTICAL WORK OF THE DIVISION. 



MADE 



UNDER THE DIRECTION OF THE ENTOMOLOGIST. 



(PUBLISHED BV AUTHORITY OK THE SECRETARY OF AGRICULTURE.) 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1893. 



