The Coccidae of South Africa. 
177 
did not occupy the whole body cavity, and judging by the hard condition of the walls of 
the cavity it did not appear that it would do so. Unfortunately, I have not been able to 
obtain fresh material to investigate the matter further with this species. Spirit specimens 
of armatvs seem to indicate that the marsupium in this species, too, occupies part of the 
body cavity only. 
From fresh material of A. tricornis collected in Pretoria in January of this year it is 
evident that the marsupium, when replete, occupies the whole of the body cavity except 
the " horns." The hard chitinous tegument was broken away, beginning from the median 
horn, and it was found that there was no trace of organs left between the marsupium and 
outer body-wall, but merely a little yellowish lymph-like fluid, streaked with blood-red. 
The wall of the marsupium was regularly domed, parchment-like in texture, quite soft, 
appearing white in colour, but stained with blood-coloured matter. 
The marsupium was quite free from the general body- wall at all points, except where 
it was attached to the edges of the ventral orifice. 
It was computed that between 2,500 and 3,000 ova were present in the marsupium, and 
that about 5 per cent, of the ova had hatched (January 24, 1915). 
The ventral surface had begun to shrink, and there was a very narrow slit between 
the hind margin of the secretionary flap and body. On removing the flap the orifice was 
found to be tightly packed with a dense white powdery substance. 
The newly-hatched larvae observed among the eggs inside the marsupium had only 
the slightest traces of the waxy filaments which adorn the dorsum of the larvae when they 
emerge. 
I have watched the emergence of larvae on several occasions. In all cases the slit was 
very narrow and the larval insects appeared to have difficulty in escaping, relying in 
some cases on other insects pushing them from behind. The waxy filaments were 
crushed down close to the dorsum, forming a smooth layer between the insect and the 
edge of the orifice, and giving the dorsum a glossy, finely striated appearance. On 
emergence, however, the filaments stand erect from the dorsum as shown in Plate XXIV., 
Figs. 51a and 51&. Fig. 51b shows a section of the insect shown in 51a after all the 
larvae had emerged, the white egg-sheils remaining within the marsupium. 
53. AspiDOPEoCTUs ARMATUS Newstead. 
(Plate XXVI., Fig. 63. Plate XXVIL, Figs. 65 and 65a.) 
Aspido])roctus armatus Newstead, Mitteil, aus dem Zool. Mus. in Berlin, 
p. 160, 1911. 
Professor Newstead's description is as follows : — 
"Female adult. Elongate, narrowed posteriorly; margin in front more or less 
truncate ; sides broadly concave and deeply and coarsely punctate. Cephalic area 
sloping suddenly downwards, the area defined by two widely separated and rounded 
ridges, most clearly defined towards the margin, each terminating with a short, 
stout, tooth-like waxen appendage ; thoracic area with two large transverse ridges each 
bearing four large bluntly pointed processes, one lateral and two median; abdominal 
area flat, tapering more or less posteriorly ; margin forming a distinct ridge along 
which are six small and bluntly pointed processes of which the first and last are the 
largest; margin with a series of blunt tooth-like waxen appendages, many of which are 
bifid. The whole of the dorsum bears a thin coating of greyish granular wax, but is 
darker and more homogeneous over the blunt processes. Venter flat or concave, 
13 
