4 LETTER OF TRANSMITTAL. 
The present year will witness the recurrence in the Southern States 
of the largest of the 13-year broods of this insect, and the prompt 
publication of this Bulletin is therefore advised to meet inquiries 
for information and to assist in the collection of accurate records of 
this and subsequent broods. 
Respectfully, 
L. O. Howarp, 
Entomologist and Chief of Bureau. 
Hon. JAMES WIson, 
Secretary of Agriculture. 
