Honolnki, Aug-nst ist, 1903. 



Tlic Coiiiiiiissioiicrs of Agriculture of the Territory of Ha7vaii: 



Gentlemen : 



In the absence of the Superintendent of Entomology, I here- 

 with submit for publication a report on the subject of the leaf- 

 hopper of the sugar-cane, an insect imported into these islands 

 during recent years. I have already reported very fully at in- 

 tervals during- the last twelve months on most points connected 

 vvitli this leaf-hopper attack to various members of the Hawaiian 

 Sugar Planters' Association, and some of these reports have been 

 printed in their publications. For the sake of completeness, I 

 have here repeated matter contained in some of these reports, 

 though at less length. Appended also are some important notes 

 on the subject of chemical treatment of seed cane containing eggs 

 of the leaf-hopper, with a view to destroying these without in- 

 jury to cane. These notes were kindly furnished me by Mr. C. F. 

 Eckart, Director of the Experiment Station, at Makiki, and the 

 experiments on which they are based were conducted with the 

 greatest care and exactness. More than a year ago I declared 

 the necessity of making these experiments and it is fortunate that 

 Mr. Eckart has been able to make them. 



R. C. L. PERKINS. 



