LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Bureau of Entomology, 

 Washington, D. C, January 26, 1910. 

 Sir: I have the honor to transmit herewith, for pubhcation as 

 Bulletin No. 66, seven papers dealing with certain insects injurious 

 to truck crops. These papers, which were issued separately during 

 the years 1907 and 1909, are as follows: The Asparagus Miner and 

 Notes on the Asparagus Beetles, by F. H. Chittenden; The Water- 

 Cress Sowbug and the Water-Cress Leaf-Beetle, by F. H. Chittenden ; 

 The Cranberry Spanworm and the Striped Garden Caterpillar, by 

 F. 11. Chittenden; The Leafhoppers of the Sugar Beet and Their 

 Relation to the ''Curly-Leaf" Condition, by E. D. Ball; The Semi- 

 tropical Army Worm, by F. H. Chittenden and II. M. Russell; The 

 Hop Flea-Beetle, by F. H. Chittenden; Miscellaneous Notes on 

 Truck-Crop Insects, by F. H. Chittenden. 

 Respectfully, 



L. O. Howard, 



Entomologist and Chief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



