410 Transactions. — Zoology. 



Plate XX. 



Fig. 1. Ptilvinaria thompscmi, insects on branch. 



Fig. 2. „ female and sac, enlarged. 



Fig. 3. „ diagram of adult female. 



Fig. 4. „ antenna of adult female. 



Fig. 5. „ last jonit of antenna, enlarged. 



Fig. b. „ foot of adult female. 



Fig. 7. „ spiracle and marginal spines of adult 



female. 

 Fig. 8. „ test of male pupa. 



Fig. 9. Undetermined Hemicoccid, insects on leaf, second stage. 

 Fig. 10. „ insect, second stage, enlarged. 



Fig. 11. „ diagram of female, second stage. 



Fig. 12. „ antenna of female, second stage. 



Fig. 13. „ foot of female, second stage. 



Fig. 14. „ marginal spines of female, second 



stage. 

 Fig. 15. „ abdominal extremity of female (after 



pressure). 

 Fig. 16. „ , larva. 



Fig. 17. „ antenna of larva. 



Plate XXI. 



Fig. 1. Prosopophora atherospervice, insects on bark. 



Fig. 2. „ adult female in test, enlarged. 



Fig. 3. „ test of male pupa. 



Fig. 4. „ diagram of adult female. 



Fig. 5. „ antenna of adult female. 



Fig. 6. „ diagram of abdominal extremity of 



adult female. 



Fig. 7. „ spiracular spines of adult female. 



Fig. 8. „ perforated discs and figure-of-eight- 

 spinnerets. 



Fig. 9. Eriococcus spiniger, diagram of female. 



Fig. 10. „ antenna of female. 



Fig. 11. „ marginal spines of female. 



Fig. 12. Lachnodius lectularius, insects on twig. 



Fig. 13. „ adult female, enlarged. 



Fig. 14. „ antenna of adult female. 



Fig. 15. „ foot of adult female. 



Fig. 16. „ abdominal extremity and anal ring of 



adult female. 



Fig. 17. „ marginal spines of adult female. 



Fig. 18. „ larva. 



Fig. 19. „ marginal spines of larva. 



Plate XXII. 



Fig. 1. Lachnodius hirtus, insects on branch. 



Fig. 2. „ diagram of hairs of female. 



Fig. 3. „ antenna of female. 



Fig. 4. „ foot of female. 



Fig. 5. „ anal ring of female. 



Fig. 6. „ rostrum and mentum of female. 



Fig. 7. „ larva. 



Fig. 8. „ antenna of larva. 



Fig. 9. „ marginal spines of larva. 



Fig. 10. SphcBrococcus obscuratus, insects in blisters on bark. 



Fig. 11. „ some blisters cut open. 



