SCALE-INSECTS. 65 
long, slightly knobbed. Foot normal; the joints hairy; upper 
digitules fine knobbed hairs, lower pair a little broader. 
In the second stage the female is scarcely altered: the 
antenne and feet remain as before; but there is a test, white, 
waxy, very thin, covering the dorsal surface, and extending a 
little beyond the edge in an irregular fringe. On the edge also 
are a number of protruding spinneret tubes, glassy, white, 
cylindrical, either curved or straight: a few of these tubes 
protrude on the surface of the back. 
Adult female dark-brown in colour, filling the test ; convex 
above, flat beneath. Rostrum comparatively large; mentum 
probably monomerous. Antenne short, thick, atrophied; seven- 
joimted, but the joints are much confused; on the last joint some 
hairs. Feet absent. Four rows of rather large spinnerets 
radiate from the median region of the dorsum to the edge, and 
along these, on the lower side of the test, are corresponding 
narrow lines of white cottony secretion. 
This insect is viviparous, the young being sheltered awhile 
by the mother, whose under-side becomes concave during gesta- 
tion. 
Adult male dark-red ; length, about ;7jin. Antenne of ten 
joints, of which the two first are very short; the third much 
longer and expanded at the end; the fourth more than twice 
as long as the third; the remainder about equal in length to 
the third, but thicker and rounder, being almost moniliform. 
All but the first two jomts bear hairs. Foot normal; digitules 
fine hairs. 
Habitat—On Metrosideros robusta (Rata), Milford Sound ; 
Bluff Harbour. On M. tomentosa (Pohutukawa), Auckland. 
A peculiar species, easily identifiable by the presence of the 
second pellicle on the female test. 
Genus: CTENOCHITON, Maskell. 
IN Ze trams., Vol. X1., 1873, p. 208. 
Test of female waxy, with a single fringe of tooth-like, more 
or less broad, segments round the edge. 
Test of male waxy or glassy, with similar fringe. 
The edge of the body, in the second stage of the female, 
usually presents a wavy appearance, formed by a series of re- 
entering curves. This is perhaps most conspicuous in CZ. per- 
foratus. 
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