MasKELL.—On some Coccidæ in New Zealand. 209 
The young, on leaving the parent, resembles that of Lecantum hesperi- 
dum ; in fact I can see no difference except that perhaps one of the hairs on 
the last joint of the antenus is longer in this species. The antenna has 
Six joints, on the last of which are eight fine hairs. 
In its next stage the female insect is extremely thin, appearing on the 
leaf like a translucent blueish film; so thin indeed that some care is 
necessary to detach it unbroken from the plant. Sometimes so many of 
these films are seen together as to give quite a slimy appearance to the 
under side of the leaf. Plate VII, fig. 18a, shows the appearance of the 
insect at this stage. The toothed fringe is here seen as closely attached to 
the body; it is very difficult, if not impossible, to detach it mechanically at 
this stage. Upon immersion, however, in turpentine or spirits of wine and 
then in Canada balsam the test seems to become dissolved, and with it dis- 
appears the fringe, leaving the insect as shown in fig. 134. 
It will be seen that the outline of the body is elliptical, but instead of 
presenting a regular curve as in Lecanium hesperidum the edge shows a 
number of re-entering curves, giving a wavy appearance. This peculiarity 
is noticeable to a greater or less extent in all the species of the present sub- 
division which I have observed; and I am somewhat inclined to think that 
it might be taken as a distinguishing characteristic of the New Zealand 
Lecanio-diaspida. 
The rostrum and mentum are of the usual kind. The antenna have 
seven joints (fig. 13c); the third much the longest, the two first short and 
broad, the fourth rather less than the fifth which is again rather less than 
the sixth, the sixth about equal to the seventh which has a few long hairs. 
The legs have the cox; very thick, the femora thick and not very long, the 
tibie and tarsi narrow and of about equal length. The claw (fig. 18d) has 
the upper digitules very long, with a minute knob, the lower pair shorter, 
and not nearly as broad as in Lecanium hesperidum. The abdominal lobes 
are as usual, and the anal ring has six or eight long hairs. 
Opposite the stigmata are spines, as in all Lecanid@, and several short 
hairs are placed all round the edge. 
The eyes appear as small red granular spots placed in front of the 
antenne. 
It is not until the female insect has entered upon a later stage that the 
character of the test or carapace can be made out. An insect taken towards 
the end of summer, say in February, can be easily detached from its test; 
and in the autumn and winter a large number of tests, empty, may be 
seen on the leaves. The female herself does not, I think, undergo a change, 
except that she has increased in size and thickness and is full of eggs. She 
appears circular in outline, somewhat convex, with an average diameter of 
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