82 



ENTOMOLOGICAL NRWS 



[Feb., '15 



Table II. 



Number of melon fly larvae which pupated and issued as 



adult flies. the larvae being submekoed in seven 



inches of water for a period of 



two to four days. 



Oranges which were infested with the larvae of the Med- 

 iterranean fruit fly were thrown into a barrel containing water, 

 while other oranges were cut in half before throwing them 

 into the barrel. A day later many of the smaller maggots were 

 found floating on the surface of the water while some of the 

 larger maggots extended out stifily from holes in the peel of 

 those oranges which had not been cut. Some of these larger 

 maggots were placed upon moist filter paper in a dish, and 

 most of the larvae became active within several hours. Traces 

 of life in a small per cent, of the maggots could be found after 

 the infested fruit had remained in water for three days. After 

 the fruit had been in the barrel of water for a period of four 

 days, the contents were dumped into a half dozen boxes and 

 covered with several inches of soil. No Mediterranean fruit" 

 flies, however, emerged. Undoubtedly certain chemicals could 

 be added to the water, which would destroy the fruit fly mag- 

 gots in the infested fruit in less time, but this again, would 

 increase the cost. 



CONCLUSION. 

 Burying infested fruit in over three feet of loose soil would 

 require a considerable amount of labor. If Mally's (7) method 

 of burying fruit beneath ten inches of soil carefully tramped 

 will prevent the fruit flies from escaping, it will not only prove 

 to be one of the cheapest and most practical methods of de- 

 stroying infested fruit, but it will also be a means of adding a 

 valuable fertilizer to the soil. Submerging fruit in water for 



