28
Transactions. -—Zoology.
• CocciD.^. — ^Plate Yin,, figure 19. — CocciD^.
ig. a, Dactylopius calceolarice : female ; magn. 20 diams.
»>
»
ii
11
jj
antenna : magn. 60 diams.
foot : magn. CO diams.
anal region ; magn. 90 diams.
Dactylopius j^ocs :
g
»»
i]
M
11
antenna : magn. 60 diams.
foot ; magn. 60 diams.
anal region: magn. 200 diams.
Fig, a,
0,
a,
Coccip^. — Plate YIII., figure 20. — Coccin.E.
'chasi : young insect : magn. 40 diams.
e
female, 2nd stage : magn. 20 diams.
hairs and spinnerets: magn. 200 diams.
antenna, 3rd stage : magn. 40 diams.
^
foot, 3rd stage : magn. 90 diams.
antenna o! young : magn. 90 diams.
CocciD^. — Plate VIII,, figure 21.
Fig. a, Iceryapurchasi : female, commencement of last stage, viewed from above;
magn.'G diams.
b, Icerya purchaBi ; ditto, under side : magn. 6 diams.
If
If
)»
I*
ft
>>
II
n
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9t
C,
11
11
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' Fig. a, Poicellia vitreo-
b,
0,
d.
f, 1.
female, end of last stage : magn. 6 diama,
ditto, under side.
Coccidj:.— Plate YIII., figure 22.
adiata : e^^s : ma^n. 150 diams.
female : magn. 25 diams.
abdomen of young : magn. 90 diama,
antenna : magn. 100 diams.
foot : magn, 200 diams.
anal marking: magn. 200 diams.
fringe ; magn. 200 diams.
r
Akt, XVII. — On a Hymenopterons Insect parasitic on CoccidsB.
By W. M. Maskell.
[Read before the Philosophical Institute of Canterbury, Ath Ju\j, 1878.]
Plate IX.
OilE
of the Coccid^ are much troubled by parasites. In this country I
have not found this to be the case upon the naked-bodied species, Lecanium^
etc. But some of the Diaspid^e, particularly Mytilaspis pomontni^ have often
in their shells minute white Aeari; and as in these cases many of the
enclosed eggs have been shrivelled or empty, I imagine that the Acants may
devour them.
The insect I am nov.^ describing attacks some of the indigenous test-
bearing Coccidge. When in June, 1877, I found my first specimens of
CtemcJuton prnforalus, I did not at first understand the nature of an obiect
BioStor
