PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 629 



As a consequence my stock of parasites dwindled, and I was disappointed 

 in the hope 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 parasites. I also 

 lost the small colony of Spalangia, one generation running to males. 



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, on 10th May 1916. 



From this .small stock, however, the parasite was successfully mul- 

 tiplied and in the course of a month or two it was possible to liberate 

 large lots in suitable localities. This artificial propagation has conti- 

 nued to the present date and thousands of the parasites have been sent 

 out to every locality in the islands where melons are grown. By August 

 1916 the parasite was recovered from fruit gathered in Honolulu gardens, 

 and we were soon assured of the success of the introduction. At the 

 present time the parasite accounts for the destruction of 50 jjer cent, of 

 the melon-fly infesting our fruit, as ascertained from rearing parasites 

 and flies from different localities in the islands, and in some locahties 

 it is again possible to grow melons successfully. 



It is very kind of Mr. Fullaway to have sent it* this paper in response Mr. Fletcher. 

 to a request on my part to give us a short account of his trip to India to 

 collect parasites of Chaetodacus cucurbitce. It is of considerable interest 

 to us and we are very pleased to find how successful this introduction 

 has proved in Hawaii. 



29.— INSECT PESTS OF THE TEA-PLANT IN FORMOSA. 

 (Preliminary Report.) 



Bij Dr. T. Shiraki, Government Entomologist, Formosa. 



Tea-cultivation in Formosa is one of most important items of agri- 

 culture, and the annual out-turn totals more than 20,000,000 pounds. 

 The cultivation has improved, year by year, and at the present time 

 is being carried out more scientifically. Slight attention is, however, 

 given by the cultivators to tea-pests, with a few exceptions, such as 

 Andraca bipunctata, Euproctis conspersa, and several Tortricidce. 



At the Agricultural Experiment Station of the Government of For- 

 mosa, the pests of the tea-bush are being studied, especially those which 





