224 Transactions.— Zoology. 
account of the tubercles it ought to be removed thence. I see no reason 
for perpetuating the error here, and have therefore placed it in its proper 
place. 
Planchonia epacridis, sp. nov. (?) 
Figs. 30-87. 
Young insect about 3, inch in length, outline oval, body flat, tapering 
somewhat towards the anal tubercles (fig. 80). Antenne (fig. 31) of five 
joints, but as these are crossed by numerous, closely placed, transverse lines, 
they seem to have more joints. The last joint is slightly clavate and has 
several long hairs. Feet (fig. 82) with well developed coxa, trochanter and 
femur; tibia and tarsus thin. I can make out only two digitules, which 
are fine hairs. From the anal tubercles spring two long sete. The mentum 
is uni-articulate. General colour reddish brown. All over the dorsal sur- 
face and round the edge of the body are scattered spinneret orifices in 
the form of the figure 8, from which spring long, curling, white, glassy 
tubes. 
Second stage of female with general outline resembling the young; body 
somewhat flatter, marked with several transverse corrugations. Average 
length about =, of an inch (fig. 33). Antenne completely atrophied, 
indeed quite lost, their place being occupied only by circular rings with four 
hairs (fig. 84). Feet likewise absent. Mentum uni-articulate. Anal tuber- 
cles not very prominent, each bearing a long seta. The anal ring has, 1 
think, six hairs. On the dorsal surface there are only a very few spinneret 
orifices, but round the edge of the body is a row of the figure-of-8 spi 
nerets, and from these springs a long silvery fringe, which is double. In 
fig. 83 I have tried to represent this fringe, but have only been able to show 
one row of it. It is necessary to imagine another row above the one shown, 
as if there were two fringes, one over the other. As the colour of the 
insect at this stage is reddish brown, as is also the surface of the leaf on 
which it feeds, the effect of this double glassy fringe of silver is of great 
beauty. The tubes of the fringe are not quite straight. Each pair springs 
from one of the figure-of-8 orifices, and the tips slightly diverge. 
The adult female is covered over with a smooth, hard, semi-transparent 
test, convex above, flat beneath, and on the underside this test is also almost 
closed, leaving only an orifice for the rostral sete, so that the insect is really 
enclosed: but at the extreme end of the abdomen the upper and lower 
portions of the test are slightly parted, leaving an opening. The test (fig- 
85) is oval, but tapers towards the anal extremity, and in all the specimens 
which I have seen this anal end was turned towards the tip of the leaf. I 
should imagine that the reason for this is to facilitate the work of the male 
(though I have not as yet found any male insects). The leaves of Leuco 
