The Coccidae of South Africa. 
141 
like ; they are situated near the posterior margins of the first four 
abdominal segments, one on the middle line of each. They have thick 
chitinous margins, circular, 65-68 jx in diameter. Smaller individuals 
exhibit plates approximately 50 ji in diameter. In a few examples there 
seem to be indications of a sternal plate similar to that mentioned by 
Green in his Phenacoccus iceryoides, and possibly also some smaller plates, 
similar to the abdominal ones on segments 5 and 6. The dermis is charac- 
terized by simple gland-pores with thin edges and numbers of hairs or 
bristles. In addition to the small gland-pores there are numerous disc- 
like glands, but they are scarcely noticeable, appearing as impressions in 
the derm rather than thickenings. They are indicated in Fig. 30. The 
dermal hairs are most numerous in the circum-anal region, where a large 
number are as long as the setae of the anal ring. The antennae are 
extremely variable, but since the majority of the large specimens have 
9-jointed forms I include the insect in this series, but it should be 
remarked that the terminal segment is always comparatively short. In 
a few instances segments 8 and 9 are only separated by a pseudo-articula- 
tion. In this case they are indicated by two measurements united by a 
+ sign and included under 8. 
Example 1. 
I. 
II. 
III. 
IV. 
V. 
VI. 
VII. 
VIII. 
IX. 
E. 47 
68 
34 
37 
40 
24 
34 
88 
31 + 54 
L. 51 
72 
37 
37 
40 
27 
34 
34 
48 
Example 2. 
E. 51 
51 
27 
34 
31 
27 
24 
27 
51 
L. 41? 
51 
27 
31 
23 
20 
18 
64 
27 -f 37 
Example 3. 
E. 51 
.51 
34 
34 
34 
27 
24 
30 
48 
L. 48 
51 
31 
34 
27 
24 
21 
64 
17 + 47 
Example 4. 
E. 41 
51 
30 
75- 
51 
L. 44 
51 
37 
23 
34 
23 
23 
21 
48 
Example 5. 
E. 47 
51 
34 
23 
34 
27 
27 
23 
48 
L. 47 
51 
34 
30 
37 
27 
23 
23 
41 
In example 4 (") there is an indication of a pseudo- articulation about 
the middle. 
