LETTER OF SUBMITTAL. 
DEPARTMENT OF AGRICULTURE, 
DIVISION OF ENTOMOLOGY, 
Washington, D. C., January —, 1890. 
Str: I have the honor to submit for publication Bulletin No. 22 of 
this Division. Owing to the necessities of the case I was able to include 
in the annual report only a general summary of the work of the field 
agents of the Division, reserving their full reports on the work of the 
year for subsequent publication. They are, therefore, here presented. 
Respectfully, ear 
. V. RILEY 
Entomologist. 
Hon. J. M. Rusk, 
Secretary of Agriculture. 
5 
