LETTER OF TRANSMITTAL 



U. S. Department of Agriculture, 



Division of Entomology, 



Washington, D. C, June 17, 1893. 

 Sir: I have the honor to transmit herewith, for publication as Bul- 

 letin No. 31 of this Divisiou, a catalogue of the exhibit made by the 

 Division of Entomology at the World's Columbian Exposition. 

 Respectfully, 



C. V. Riley, 

 Entomologist, 

 Hon. J. Sterling Morton, 



Secretary. 



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