22 Transactions, — Zoology. 
Male puparium narrower than that of the female, and a good deal 
darker, being sometimes almost black; length about #, inch: not cari- 
nated. 
Adult female of normal form of Mytilaspis. Abdomen ending in two 
median lobes: along the edge several deepish curvilinear incisions between 
which are some strong spines. Five groups of spinnerets: lower pair with 
14-16 orifices, upper pair 12-16: uppermost group 4-6. 
I have not seen the adult male: the pupa exhibits apparently a very 
long abdominal spike. 
This insect is closely allied to M. pyriformis, mihi, but differs in the 
lobes of the abdomen in the female, and in the very dark puparium of the 
male. However, I cannot consider it with certainty a new species. It is 
undoubtedly not a Chionaspis. 
Hab. On Astelia cunninghamii, an epiphyte on numbers of our forest 
trees. 
2. Mytilaspis pyriformis, mihi. 
(Trans., vol. xi., p. 194; vol. xii., p. 121.) : 
This insect occurs abundantly near Wellington on Dysoxylon spectabile, 
in company with Chionaspis dysoryli and Fiorinia astelie. It may be 
easily distinguished from the latter, of course, by the second pellicle of 
the female; from the former it differs by the puparium of the male, 
which in the Mytilaspis is brown and not carinated, and by the generally 
much larger size and brown colour of the female puparium. The abdominal 
segment of the female is also a clear distinction. 
Some of my specimens attain a length of 4 inch for the female pupa- 
rium. 
Genus Chionaspis, Signoret. 
1. Chionaspis dysoxyli, sp. nov. 
Female puparium thin, flattish, pyriform, white in colour with a faint 
pink tinge when the egg-mass beneath shows through it. Length about 
sinch. The second pellicle is comparatively large. 
Male puparium white, narrow, carinated; length about 44; inch. 
The insect affects principally the leaves of the plant, and the puparia 
are usually clustered thickly along the midrib. 
Adult female of general form of Mytilaspis, not very deeply corrugated ; 
colour, yellowish red. Abdomen ending in a broken curve with many 
curvilinear incisions. There are fourteen lobes, of which the two median 
are the largest ; separated from them bya spine on each side are two others. 
rather smaller; then another spine and a short open space; and then three 
smaller lobes and another spine; another space, and then a single small 
