LETTER OF TRANSMITTAL. 
Unitep States DerartMent or AGRICULTURE, 
Bureau or Enromovoey, 
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 publications 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out of date and there is a great demand among economic entomolo- 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. 
Respectfully, 
L. O. Howarp, 
Entomologist and Chief of Bureau. 
Hon. James Witson, 
Secretary of Agriculture. 
