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of finding additional species. I spent nearly three months in the 

 Philippines, rearing about 18,000 flies, but nothing new disclosed 

 itself. This seemed strange in view of the rich fruit-fly fauna 

 there, which is known to harbor several species of opiine para- 

 sites. I also lost the small colony of Spalangia, one generation 

 running to males. 



\Miile in Manila, Mr. Osborne of the Planters' staff, called my 

 attention to the heavy parasitism suffered by the corn leaf-hopper 

 in the Philippines. One particular parasite, a Mymarid, seemed 

 especially effective, and I undertook to introduce it into Hawaii, 

 keeping a well-stocked cage of it going for a month before my 

 departure. It was unfortunate that at the time of leaving Manila, 

 the steamer connections were such that I was obliged to remain 

 in Hongkong a week. I used this intermission in the voyage to 

 the best advantage, but my fruit-fly parasites had dwindled to 

 very small proportions by the time of my arrival in Honolulu, 

 and the leaf-hopper material went utterly bad before getting as 

 fas as Shanghai. It was really too early in the season to bring 

 corn plants through. This parasite and another chalcid, which 

 is known to parasitize the corn hopper, should ultimately be 

 brought here, as in the Philippines they prove an effective check 

 on the hopper. 



As previously stated, since reaching Honolulu the melon fly 

 parasites have multiplied, and the introduction is practically as- 

 sured, but the original task of finding enemies of the melon fly 

 which will prove an effective control of the pest, is far from ac- 

 complished. Before making further recommendations, it is neces- 

 sary to study the problem thoroughly from several different an- 

 gles, and it is probable that the advice of Professor Silvestri and 

 other specialists would give more light on the nature of the work 

 and the best methods for its accomplishment. 



Very respectfully, 



D. T. FULLAWAY, 



Field Entomologist. 



