The figure of the antenna or horn gives a general 
idea of its form, but when minutely examined the ter¬ 
minal joint is about a quarter or fifth longer than the 
preceding, and it has at least four hairs, longish, but not 
so long as those on the club of the larval antenna, and 
markings are distinguishable, giving it an appearance 
which might be called a club, but I do not see that it is 
at all broader than the preceding joints.* 
The egg-sac is white, formed of minute threads 
exuded by the insect, and is striped from the line of 
its attachment to the body to the hinder extremity or 
sides by about fifteen parallel round-topped ridges, 
having deep hollows between. In the case of some of 
the sacs which I examined the central longitudinal ridge 
was narrowest, even to being half the width only of the 
others. 
The general appearance of the female is well described 
by the name of “ Cottony Cushion-Scale” used in Cali¬ 
fornia, or also the name of “ Bibbed Scale.” Within 
the sac lie a multitude of oval salmon-coloured eggs, 
as many, it is stated, as from 200 upwards. 
In Prof. Trimen’s Beport he states that the young 
hatch gradually from the eggs deposited in the cottony 
nidus, but appear only to leave it by degrees, till at 
length all have departed, and the empty skin of the dead 
mother alone remains behind. 
Mr. Bair stow also remarked on this head:— “ The 
bugs do not all hatch at once. I do not remark any 
sudden exit or uniformity and spontaneousness in 
clearance. . . . Several days are occupied in effecting 
a total riddance from the oviparous mother.” And he 
further observed of the young bugs, that “ when hatched 
and emerging from the maternal nidus the spider-like 
insects are extremely active for about thirty-six hours. 
* My own observations being from specimens transmitted in spirits, I 
cannot speak as to points of colour, amount of pubescence, flocculence, 
and similar points; but the structural points can be but little altered, 
and amongst these the difference in length of the second subcylindrical 
joint of the antenna of the larva from the joint immediately preceding 
is very noticeable (see p. 10).—E. A. 0. 
