LETTER OF TRANSMITTAL. 



United States Department of Agriculture, 



Bureau or Entomology, 



Washington, D. C, October 19, 1909. 

 Sir: I have the honor to transmit herewith a manuscript, by Mr. 

 Nathan Banks, an assistant in this Bureau, entitled "A List of Works 

 on North American Entomology." Similar lists, by Mr. E. A. 

 Schwarz and Mr. Nathan Banks, were published in 1888 and 1900 as 

 Bulletin No. 19, old series, and Bulletin No. 24, new series, of this 

 office. Since 1900 the number of jDublications on North American 

 insects has greatly increased, so that Bulletin No. 24 is now very much 

 out of date and there is a great demand among economic entomolo- 

 gists, students, and other workers for a new bulletin covering the same 

 subject. I therefore recommend the publication of this manuscript 

 as Bulletin No. 81, of the Bureau of Entomology. 

 Kespectfully, 



L. O. Howard, 

 Entomologist and Chief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



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