LETTER OE TRANSMITTAL. 
U. S. Department of Agriculture, 
Bureau of Entomology, 
ItVasMngton, D. C, January 25, 1910. 
Sir: I have the honor to transmit herewith, for publication as 
Bulletin Xo. 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. H. 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 H. M. Russell: The 
Hop Flea-Beetle, by F. H. Chittenden; Miscellaneous Notes on 
Truck-Crop Insects, by F. H. Chittenden. 
Respectfully, 
L. O. Howard, 
Entom ologist a nd Oh iff of Burea u . 
Hon. James Wilson, 
Secretary of Agriculture. 
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