NEW ZEALAND GARDENING. 195 



No. 2. Diaspis Ostraeformis. Branch with scales 

 upon it. Natural size. Fig. 3, scale seen from above 

 magnified. Common on the bark of pear trees. 



No. 4, 5 and 6. MytilapsisPomonum. Apple-tree 

 scale, natural size and magnified. 



No. 7, 8. Pulvinaria Vitis. Vine scale. 7. Sketch 

 of adult female scale on vine scale, natural size. Fig. 8. 

 Adult female, magnified. 



No. 9, 10. Lecanium Hibernaculorum. Brown 

 scale. No. 9. Twig with scale upon it, natural size. Fig. 

 10. Adult female scale, magnified. This scale is the pest of 

 hot-houses. Lecanium filicum is found on ferns, L'hemis- 

 phaericum on dracaenas, L'rotundum on the peach, &c. 



No. n. Lecanium Hesperidum. Magnified and 

 natural size. Known in France as the orange-tree bug, or 

 orange-tree louse. 



No. 12, 13. Dactylopius Adonidum (Coccidae proper) 

 Mealy Bug. 12. Part of leaf with Mealy Bug upon it, 

 natural size. 13. Sketch of adult female magnified and 

 natural size. The mealy secretion which is excreted by this 

 insect, and to which it owes its name, is exuded all over the 

 body. 



No. 14 to 16. Phylloxera Vastatrix (/%//^vr/^). 

 Fig. 14. Vine root attacked by Phylloxera, natural size. 

 Fig. 15. Subterranean form of female, magnified and natural 

 size. Fig. 1 6. Part of leaf of vine, snowing the galls formed 

 on the leaf by the Phylloxera, as seen on upper and under 

 surface of leaf. 



No. 17 to 19. Eriosoma Lanigera (Aphides]. 

 Apple-tree or American Blight. Fig. 17. Apple branch 

 attacked by the blight, natural size. Fig. 18. Wingless 

 larva, natural size and magnified. Fig. 19. Winged females, 

 magnified. 



No. 20 to 22. Siphonophora Rosae (Aphides}. 

 Rose Blight. Fig. 20. Young larva newly hatched and 

 magnified; natural size and magnified. Fig. 21. Larva, 

 more advanced stage, magnified. Fig. 22. Winged male, 

 natural size and magnified. Aphis rosarum, A. dirhoda, A. 

 trihoda, &c., also attack rose trees. 



