LETTER OF SUBMITTAL, 
DEPARTMENT OF AGRICULTURE, 
DIVISION OF ENTOMOLOGY, 
Washington, D. C., January 3, 1891. 
Str: I have the honor to submit for publication Bulletin No. 23 of 
this Division. It comprises the reports of the field agents of the Division 
for the past year (1890), a summary of which has been included in your 
annual report. 
Respectfully, 
C. V. RILEY, 
Entomologist. 
Hon. J. M. RUSK, 
Secretary of Agriculture. 
