U.S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



PERIODICAL BULLETIN. APRIL, 1890. 



ATol. II. 



No. lO. 



INSECT LIFE. 



DEVOTED TO THE ECONOMY AND LIFE-HABITS OF INSECTS, 

 ESPECIALLY IN THEIR RELATIONS TO AGRICULTURE. 



KDITEI) 15 Y 



C. V. RILEY, Entomologist, 



AN1> 



L. O. HOWARD, First Assistant, 



WITH THE ASSISTANCE OF OTHEIl MEMBKRS OF THE DIVISIONAL FORCE. 



{PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE.] 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1890. 



