28 Transactions.— Zoology. 
and conspicuous. A double or triple row of minute circular spinnerets 
marks the divisions corresponding to the segments of the test. Colour of 
the insect greenish, turning brown after gestation. The abdominal lobes 
are brown. 
In the second stage the female resembles generally the adult; but the 
antenne have six joints, and amongst the marginal spines are some very 
much larger than the rest. 
The young larva is flat and oval, and at the margin shows a 
fringe of long glassy pointed tubes (fig. 20), springing from the marginal 
spines, 
The adult male is about -+ inch in length (exclusive of the wings), 
brownish or reddish yellow in eolour, the wings hyaline and iridescent, 
with red nervures. Antenne (fig. 22) of ten joints, on the last of which 
are, amongst others, three long knobbed hairs. Foot with a spine at the 
extremity of the tibia; digitules fine hairs (fig. 21). At each side of the 
abdominal spike springs a strong seta, from which extends a white cottony 
pencil, as long as the body of the insect. The penis is as usual a long soft 
cylindrical tube covered with minute recurved spines. Thoracic band 
short and narrow. 
From Eleocarpus (hinau) and Leptospermum (manuka), but apparently 
the former is the principal habitat. I have only found it as yet in the 
North Island, sometimes on twigs in great numbers. 
This is a peculiarly elegant insect, the beautifully coloured and striated 
tests both of males and females forming an interesting object under a 
lens or the microscope. It cannot be mistaken for any other species that I 
know of, and the curious horn of the test, especially when double, is quite 
characteristic. — 
Subsection II.—Lercanmz. 
Genus Lecanium, Illiger. 
1. Lecanium olee, Bernard. 
Fig. 24 ; 
I find that this insect is becoming very common throughout this 
country, especially in the North Island. I have specimens from several 
plants in gardens and orchards ; it is abundant on Cassinia leptophylla, the 
useless and noxious shrub which is covering the hills near Wellington ; 
and Mr. Alderton informs me that it is spreading on the native trees near 
Whangarei. It may be readily recognized by the large size and black 
colour of the semi-globular adult females, and the one longitudinal and two 
transverse keels on the young insects. It is usually known in California 
and elsewhere as the “ black scale." 
