U.S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



PERIODICAL BULLETIN. DECEMBER, 1889. 



Vol. II. 



No. 6. 



INSECT LIFE. 



DEVOTED TO THE ECONOMY AND LIFE-HABITS OF INSECTS, 



ESPECIALLY IN THEIR RELATIONS TO AGRICULTURE. 



AND EDITED BY THE ENTOMOLOGIST 



AND HIS ASSISTANTS. 



IPUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE.! 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE, 

 1889. 



