DIPT ERA, 



87 



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

 We will borrow the following details from this learned entomologist : 



e^S 



Fig. 66. — Olives attacked by Dacus ok 



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



'J I 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 



