LETTER OF TRANSMITTAL. 



Hcjiiolulu, T. II., Ai)ril 3rd, iL)o6. 



To ihe Committee on Experiment Station, H. S. 1'. A., Honcj- 

 Itihv, T. H. 

 Gentlemen : — 1 herewith submit for pubhcation the Introdtic- 

 tion to the bulletin on "Leaf-Hoppers and Their Natural Ene- 

 mies," and also an index to this Bulletin. The latter has been 

 prepared b\' Mr. G. W. Kirkaldy. Although the material deal- 

 ing with the subject of Leaf-Hoppers is far from being com- 

 i:)letely worked out, and new material is from time to time being 

 accunuilated, yet I have thought it advisable to close Bulletin 

 I , w hich has now reached a length of more than 500 pages. At 

 the same time, considering- the practical and scientific value of 

 such work. I hope that the stibject will be continued in another 

 I'.ulletin. 



Yours obediently, 



R. C. L. PERKLN^S, 

 Director. Division of Entomologv. 



