MaskErL.—ÓOn some Coccidæ in New Zealand. 193 
longer and very thick, tarsi somewhat longer and thin, and a single claw at 
the tip. Just above the claw spring two long hairs each ending in a knob. 
After fixing upon a suitable resting-place the young insect remains in 
the same state for some time, and then undergoes its first transformation, 
The result of this is seen in the puparium, where the oval pellicle overlying 
what is evidently the pellicle of the young one shows that it becomes merely 
an oval inert mass. ‘The antenna and legs disappear, the skin of the 
former remaining attached to the first pellicle. The mouth only survives 
the change. In this second stage the insect begins to spin its shell, or 
puparium, and after another interval undergoes another transformation 
appearing at length in the shape shown in plate V., fig. 2b, or as the perfect 
female. 
The body is here seen to have lost its former regularly oval shape and 
to have become longer. The cephalic end and about half the rest are 
smooth, the remainder much corrugated. There are no legs, or antenne 
proper, but in some specimens may be seen two extremely minute pro- 
tuberances on the head, each with a few attached hairs, which are said to 
be rudimentary antenne. Some of the corrugations near the abdomen 
have three or four spines. The mouth, or rostrum, which is of the same 
general character as in all Coccide, exhibits three very long sete. 
The abdominal region, as in all Diaspide, is bright yellow. Plate V., 
fig. 2c, shows ‘its outline, which is a pretty regular curve broken by a 
number of small triangular and foliated lobes. Two of these lobes, in the 
middle, are the largest, and have on each side of them one smaller lobe. 
Between the lobes are several strong spines. The anal orifice is situated at 
what might be called the focus of the curve of the abdomen; it is oval and 
hairless. 
Forming an arch around the anus are five groups or bunches of minute 
circular openings, which are the spinnerets used in building up the 
puparium. In the uppermost group are l7 openings, in each of the two 
upper side groups 17, and in each of the two lower groups 14. Plate 
V., fig. 2d shows the appearance of these spinnerets, magnified 700 
diameters. A few single spinnerets are scattered about the abdominal 
region, and near the edge of the abdomen is a row of egg-shaped openings, 
larger than the others, the narrow ends of the eggs pointing outwards; 
these are arranged in pairs. 
I am inclined to think that the whole abdomen is covered with extremely 
minute fine hairs, for it usually presents a velvety appearance, with very 
fine parallel strise. 
When in its perfect stage the female insect occupies nearly the whole 
puparium. Later on, however, she begins laying her eggs, with which she 
dap the shield, shrivelling up herself into pore m 
