302 



Division of Entomology 



Honolulu, Hawaii, July 31, 1916. 



Board of Commissioners of Agriculture and Forestry, 

 Honolulu. 



Gentlemen : — Permit me to report on the operations in the In- 

 sectary during the month of July, 1916: 



On account of the large amount of work connected with the 

 new melon-fly parasite, we have had to abandon the propagation 

 of all of the fruit-fly and dung-fly parasites that we know to be 

 established. We are, therefore, now running only the two pupa 

 parasites, Tetrastichiis, and the melon-fly Opius. 



During July two lots of Tetrastichiis were liberated, one of 

 150 at Pearl City and another of 200 at Hana, Maui. A lot of 

 50 Dirhinus were liberated at Pearl City. 



During the month of July there were produced 1485 female 

 and 674 male individuals of the new melon-fly parasite, Opius 

 flctcheri. Liberations were as follows : 



Pearl City , 31 



Manoa 86 



King and Kalakaua 169 



Moiliili 310 



Kailua 123 



Waialua . 64 



Hilo 267 



Kapoho 132 



Molokai '. 150 



Hana 68 



Wailuku 121 



Lihue 138 



Koloa 59 



1718 



On the last day of the month Mr. Herbert Osborn of the Ha- 

 waiian Sugar Planters' Association staft arrived from Manila 

 with the &gg parasite of the corn leaf-hopper mentioned in a re- 

 cent report to the Board. As the new quarantine room at this 

 station offered the securest place for handling these parasites, and 

 as Mr. Osborn's time was largely preempted by caring for other 

 parasites more directly connected with the work of the sugar 

 planters, the leaf-hopper parasites were brought to this station 

 and the writer is assisting INIr. Osborn in taking care of their 



