The large size, black colour, and very conspicuous fringe of the adult female test, and the white loose test of the second stage, distinguish this species, especially from Ct. fuscus.
33. Ctenochiton elongatus, Maskell.
N.Z. Trans., Vol. XI., 1878, p. 212.
([Plate VII.], Fig. 4.)
Test of adult female elongated, narrow, convex. Length sometimes reaching 1/3in., width about 1/10in. Fringe not always conspicuous; the segments quadrate outwardly. Test divided into quadrangular divisions. Colour whitish, but often blackened by fungoid growths.
Test of male unknown.
Adult female filling the test, shrivelling at gestation. Edge of the body wavy. Stigmatic spines long and conspicuous. Antennæ seven-jointed. Feet normal; lower digitules absent (?).
Adult male unknown.
Habitat—On Geniostoma ligustrifolium, Auckland; on Dendrobium sp., Hawke's Bay; on Earina sp., Wellington.
Easily recognized by the great length and narrowness of the female test.