LETTER OF SUBMITTAL. 



Department of Agriculture, 



Division of Entomology, 

 Washington, D. (7., January 3, 1891. 

 Sir: 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. 



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