192 
Transactions of the Royal Society of South Africa. 
13. Pseudococcus Jilamentosiis (CklL). Trochanter of ? . 13a, Mentum of adult ? . 
14. Pseudococcus natalensis sp. n. Trochanter, and 14a, mentum of adult $ . 
15. Pseudococcus socialis sp. n. Disc-like gland-pores from dorsum of adult ? . 
16. Pseudococcus solitarius st^. n. Mentum of adult ? . 
17. Pseudococcus himierae sp. n. Mentum of adult ? . 
18. Pseudococcus mirabilis sp. n. Antenna, and 18«, caudal extremity of adult ? . 
19. Pseudococcus quaesitus sp. n. Antennal segment I. of adult ? . 
20. Pseudococcus Jia grans sp. n. One of the ventral " plates " of adult ? . 
21. Pseudococcus stelli var. tylococciformis sp. and var. n. Two of the marginal tubercles- 
from the anterior region, between the antennae of adult ? . 
PLATE XIX. 
(Figs. 22-33.) 
All figures greatly enlarged. 
Marginal spine areas of adult ? of : — 
22. Pseudococcus hurnerae sp. n. 
23. Pseudococcus mirabilis sp. n. 
24. Pseudococcus quaesitus sp. n. 
25. Pseudococcus transvaalensis sp. n. 
26. Pseudococcus trichiliae sp. n. 
27. Pseudococcus bantu sp. n. 
28. Pseudococcus citri var. phenacocciformis var. n. 
29. Pseudococcus caff r a sp. n. 
30. Pseudococcus Jiagrans sp. n. 
31. Pseudococcus nitidus sp. n. 
82, Pseudococcus segnis sp. n. 
33. Pseudococcus stelli Q^.n. 
PLATE XX. 
(Figs. 34-39.) 
Figs. 34 and 35 original ; 36-39 after Pierantoni. 
34. Pseudococcus citri (Risso). Adult ? enlarged. 
35. Transverse section showing position of " mycetom " or symbiont mass (my.). 
36. Portion of mycetom highly magnified. Large cells " sferules " containing a number 
of " sferettes." 
37. Five "sferettes" containing numbers of elongate symbiont organisms {Coccidomyce» 
dactylopii Buchner). 
38. Early stage in the infection of the ovum by " sferettes " (sf.). 
39. Later stage in which the mass of "sferettes" is rounding off to form the "polar- 
mass." 
