72 INSECTS NOXIOUS TO AGRICULTURE. 
37. CTENOCHITON PERFoRATUS, Maskell. 
N.Z. Trans., Vol. XI., 1878, p. 280; Vol. XVI., 1883, 
D: Low, 
(Plate VIII., Fig. 2.) 
Test of adult female white, waxy, circular, nearly fiat, 
brittle, thin except at the edge. Fringe thin, segments broadly 
triangular. Diameter nearly tin. The test is divided by narrow 
lines of minute spots, corresponding to the spinneret orifices of 
the insect, into rows of pentagonal or hexagonal segments. The 
interior segments are only dotted, but the exterior row ex- 
hibits curvilinear series of small perforations or air-cells arranged 
in slightly radiating rows, which extend also to the correspond- 
ing segments of the fringe. 
The test of the second stage of the female is very thin and 
filmy, waxy, flat, slightly elongated ; the fringe as in the adult ; 
but there are no perforations or air-cells. Length, about ;4;in. 
Test of male waxy, thin, slightly elongated, rather convex ; 
length, about jin. Fringe and air-cells as in the female test. 
At the abdominal end is a joint or hinge separating the last 
segment. 
Adult female filling the test, shrivelling at gestation ; colour 
greyish or greenish-white. General appearance somewhat 
leathery. Rows of minute oval spinnerets run round the edge 
and across the body, corresponding with the divisions of the test. 
Antenne of six joints, the third jomt being the longest, and 
seeming double on account of the depressed ring: on the last 
joimt some hairs. Feet normal, with somewhat thick coxe and 
femora: upper digitules long; lower pair narrow. Anal ring 
with eight hairs. A row of scattered small hairs runs round the 
edge of the body. 
Female of second stage very thin and transparent, seeming 
lke a bluish-green film. The wavy edge is conspicuous. An- 
tenn of six joints. 
Adult male yellowish. Antenne nine-joimted, every joint 
except the first bearing several hairs. Feet normal; upper 
digitules not long, lower pair fine hairs. Thoracic band con- 
spicuous and long. Abdominal spike short. 
Habitat—On Pittosporum eugenioide, P. tenuifolium, Panax 
arboreum, Coprosma lucida, Rubus, &c., Riccarton Bush, Christ- 
church ; Nelson; Dunedin; Wellington. 
