D1PTERA. 



these ruinous larvae, which generally destroy two crops out of three. 

 We will borrow the following details from this learned entomologist : 



Fig. 66. 



ttacked by Dacus oleae. 



" At the time when the olives are formed the Dacus proceeds to 

 place an egg under the skin of each of the fruits. By means of a 

 little horny instrument, with which the female is provided, and which 



