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 

 antennae 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. Antennae short, thick, atrophied; seven- 

 jointed, 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 dor sum 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 ^-iii. Antennae 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 joints 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 : CTENO CHITON, Maskell. 

 N.Z. Trans., Vol. XI., 1878, 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 Ct. per- 

 foratus. 

 5 



