Masxeti.—On New Zealand Coccide. 298 
My specimens were on a fern, Phymatodes billardieri, from Wellington. 
2. Mytilaspis metrosideri, sp. nov. 
Plate VII., fig. 2, abdomen of female. 
Puparium white, pyriform. Female in all stages dark-coloured ; in last 
stage nearly black. General outline resembling M. drimydis, but the abdo- 
men is much sharper and more pointed, with a finely-serrated edge, ending 
in three minute-pointed lobes joined by a scaly process. Spinnerets in an 
almost continuous arch, which may be resolved into five groups; 70 or 80 
openings; several single spinnerets. The rudimentary antenne can be 
made out. 
The young female has an elongated oval outline, little corrugated. The 
feet, digitules, antennæ, etc., resemble those of M. pomorum. The abdomen 
is like that of the adult, without the groups of spinnerets. 
I have not the male of this species. 
My specimens are from the rata tree. 
8. Por1asPis, gen. nov. 
This genus is characterized by having the spinnerets in more than five 
groups, and in a double row, the edge of the abdomen as in Diaspis 
Signoret forms a genus, Leucaspis, which possesses the same character ; 
but it has also a fringe of spiny hairs set close together round the edge of 
the abdomen, which fringe is absent in Poliaspis. 
The puparium is white, broad. The sim fads which may reach ji 
inch in length, resembles in outline Mytilaspis pomorum; it is dentes 
greenish-white, and shows the rudimentary antenne. The abdominal ex- 
tremity is much jagged, with a median depression as in Diaspis rose, and with 
a few scattered hairs. There are eight groups of spinnerets; four, containing 
each from twenty to thirty orifices, are placed in opposite pairs, the fifth, 
with four to six orifices, being between the upper pair; above these, three 
other groups form an arch, the two outer ones having eight to ten openings, 
the middle one three to five. Many single spinnerets follow the corruga- 
tions of the body as in Mytilaspis cordylinidis. 
The male insect is of a bright scarlet or deep orange colour. The 
antenne, covered with longish hairs, have ten joints; the first two very 
short and thick ; the next five long, equal and cylindrical; the eighth and 
ninth somewhat shorter; the tenth fusiform and as long as the seventh. 
The legs are rather long; the femur thick, the tibia more slender, broaden- 
ing towards the tarsus, which is about one-third as long as the tibia, and 
narrows sharply down to the claws. Both tarsus and tibia are hairy. The 
