U.S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



PERIODICAL BULLETIN. OCTOBER, 1889. 



Vol. II. 



I^o. 4. 



INSECT LIFE. 



DRVOTEI) TO THE ECOXOMY AND LIFE-HABITS OF INSECTS, 



ESPECIALLY IN THEIR RELATIONS TO AGRICULTURE, 



AND EDITED BY THE ENTOMOLOGIST 



AND HIS ASSISTANTS. 



PUBLISHED I!Y AUTHORITY OF THE SECRETARY OF AGRICULTURE. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



