PLATE X. — THE HYLESINUS OLEIPERDA. 



Fig. 1. Small branch of the olive attacked by the Hylesinus at 

 points a. and b, recognized by the hole through which the insect 

 penetrated and by the reddish spots which show the locality of the 

 galleries. 



Fig. 2. A small piece of the bark showing the inside work with 

 principal gallery a, and the eggs in place b, (enlarged.) 



Fig. 3. A small piece of the wood stripped of bark showing the 

 main gallery a, and the secondary galleries b, dug out by the larvae, 

 (enlarged, i 



Fig. 4. The egg (enlarged.) 



Fi°\ 5. The larva (enlarged.) 



Fig. 6. The chrysalis (enlarged.) 



Fig. 7. The insect (enlarged.) 



