PLATE XII. — COCCUS OLEAE AND LECANIUM OLEAE. 



BLACK SCALE. 



Fig. 1. — Small branch attacked by scale, a, small woody excres- 

 cence which sometimes appears on olives attacked by this insect ; b, 

 b, leaves which show on lower side some young scales covered with 

 cottony substance ; c, c, the shells of dark brown which cover the 

 females and their eggs as yet unopened ; d, d, d, other old shells, in 

 which are eggs, the larvae having gone out ; c, e, ants searching for 

 scale of whom they are very fond, (natural size.) 



Fig. 2. Leaf showing on lower side two scales (a) male (b) fe- 

 male, (natural size.) 



Fig. 3. Twig showing at (a) shell of dead female scale. 



Fig. 4. The egg (increased.) 



Fig. 5. The larva just closed in, seen from above (enlarged.) 



Fig. 6, The same seen from below (enlarged.) 



Fig. 7. The male in chrysalis stage (enlarged.) 



Fig. 8. The same as insect (enlarged.) 



Fig. 9. The young female (enlarged.) 



Fig. 10. The adult female, seen from above (enlarged.) 



Fig. 11. The same seen from below (enlarged.) 



Fig. 12. Antenna, (enlarged.) 



Fig. 13. Foot, (enlarged.) 



Fig. 14. View of anus, from above, (enlarged.) 



Fig. lo. Same from below, (enlarged.) 



Fig. 16. Female at point of hatching, seen from below. 



Fig. 17. Female laying eggs, seen from above, (enlarged.) 



Fig. 18. Adult female, seen from above, (enlarged.) 



