EXpLANATION oF Puate IV. 
Mytilaspis minima, Newst. 
Figs. 1-3. 2 pygidium. 
4, ¢ (second stage) pygidium. 
5. Larva, antenna. 
M. ampelodesme, Newst. . 
Fig. 6. 9 pygidium. 
7. ¢ (second stage) antenna. 
Chionaspis striata, Newst. 
Fig. 8. 2 pygidium. 
Parlatoria affinis, Newst. 
Fig. 9. @ adult; 
10. do, antenna; 
11. do. pygidium. 
12. ¢ apical joint of antenna. 
P. sizyphi, Lucas : : ; 
Fig. 13. @ thoracic tubercle. 
Planchonia algeriensis, Newst. . 
Fig. 14. @ dermis ; 
15. do. (second stage) antenna ; 
16. do. do. leg. 
17. Larva, antenna. 
P. ilicis, Newst. 
Fig. 19. Q antenna. 
Ceroplastes ruse, L. 
Fig. 20. @? antenna ; 
21-23. @ stigmatic area. 
C. nerii, Newst. 
Fig. 24. Q antenna ; 
25. do. stigmatic area. 
Eriococcus formicicola, Newst. 
Fig. 26. 2 antenna ; 
27. do. dermis. 
E. thymelaw, Newst. 
Fig. 28. 9 antenna. 
29. do. dermis. 
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