LETTER OF TRANSMITTAL. 
U. S. Department of Agriculture, 
Division of Entomology, 
Washington, D. C., June 12, 1889. 
Sir : In the absence of Professor Eiley, who is now at the Paris Ex¬ 
position in otficial capacity, I beg to submit for publication Parts I, II, and 
III of the Bibliography of American Economic Entomology, which was 
ordered by Congress in July, 1882. Owing to various unforeseen delays 
this work has not yet been completed. Its preparation was originally 
assigned by Professor Eiley to Mr. B. Pickman Mann, formerly of this 
Division, and upon the severance of his connection with the Depart¬ 
ment, in the fall of 1885, it was turned over in. an incomplete and frag¬ 
mentary condition to Mr. Samuel Henshaw, of Boston, who has added 
greatly to it and practically rewritten the portions already prepared. 
The extent of the work renders it advisable to publish it in several 
parts, and as there is unquestionably a more urgent need on the part of 
working economic entomologists for a bibliography of the writings of 
B. D. Walsh and C. Y. Eiley than of others, on account of their great 
number and value, these portions have been finished first. Their imme¬ 
diate publication will probably antecede the publication of the final part 
only by a few months. 
Very respectfully, yours, 
* L. O. Howard, 
Acting Entomologist. 
Hon. J. M. Eusk, 
Secretary of Agriculture. 
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