U.S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



PERIODICAL BULLETIN. (Double number.) January and February, 1890. 



Vol. II. Nos. 7 and 8. 



INSECT LIFE. 



DEVOTED TO THE ECONOMY AND LIFE-HABITS OF INSECTS, 

 ESPECIALLY IN THEIR RELATIONS TO AGRICULTURE. 



EDITED BY 



C. V. RILEY, Entomologist, 



AND 



L. O. HOWARD, First Assistant, 



WITH THE ASSISTANCE OF OTHER MEMBERS OF THE DIVISIONAL FORCE. 



{PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE.) 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1890. 



