224 Transactions.—Z oology. 
not able to consider these lateral appendages as wings; first, because they 
start from the head itself and not from the thorax; secondly, because 
trachez may be seen ramifying from the thoracic spiracles through them ; 
thirdly, because in the discarded tests which, in November, can be found 
pretty numerous, these appendages are very clearly portions of the test 
itself; fourthly, because the fringe runs round their edges in the same way 
as on the rest. 
The second peculiarity is in the different size of the thoracic and 
abdominal regions and the clear line of demareation between them. In the 
other species of Coccide it is difficult, if not impossible, to tell where the 
thoracic portion of the female ends and the abdominal portion begins. 
In Powellia the division is as distinct as in the males of the other genera. 
À third peculiarity is in the feet, which I shall describe presently. 
The eggs of this species are bright yellow, tapering to a point at one 
end; the point appears to be somewhat hooked; fig. 22a. "They are seen 
attached in clusters to twigs of Discaria and Pittosporum. 
The young insect is extremely minute, not so large as the dot over the 
letter iin small type. Its colour is brown; the winglike appendages are 
not distinguishable. The abdomen, which is similar in outline to that of 
the adult, is marked by six transverse dark bands and a dark patch at the 
extremity, fig. 22c. From each band, at the edge, spring long transparent 
tubes, in form of fringe, but they are not set so closely together as in the 
later stages. The antenns, I think, have only four joints, of which the 
third is the longest; the fourth joint has two long hairs. The legs are 
short and very thick; I saw no coxa; the foot resembles that of the adult. 
In the next stage the general form is not altered. The bands of the 
abdomen have become fainter, and the tubes of the fringe are set closer 
together. 
Still later, the insect appears as in fig. 225. This is the last stage which 
I have been able to observe. The four wing-like appendages are now 
clearly defined, but, as shown in the figure, five tracheæ ramify from the 
body through them, and they cannot be considered as wings. The head, 
thorax and abdomen are distinct. The head, transverse, is oval; the eyes 
are large, faceted, red in colour. The mentum, tri-articulate, ends in brown 
toothlike processes. The antenna have six joints; the first and second 
very broad and short, the third narrower and longer, the fourth and fifth 
still narrower and shorter than the third, the sixth very long, somewhat 
fusiform, with two small spikes at the tip and just above the spikes a long 
hair.* See fig. 22d. The legs are thick and long, set equi-distant on the 
thoracic region ; the coxa and femur very thick, the tibia and tarsus some- 
* Mite 1 ete ae EN eee 
8 8 in all specimens. 
