Adult female of the usual peg-top shape, greenish-yellow in colour; abdomen ending in two conspicuous median lobes, with a number of scaly serrated hairs, as in _A. nerii_. Five groups of spinnerets: uppermost group with four orifices; the remainder, seven or eight. Some specimens show only four groups. Adult male unknown. Habitat--On _Sophora tetraptera_ (Kowhai), Port Hills, Canterbury. Only a few species of Aspidiotus are reported with five groups of spinnerets. The present insect differs from all of them in the scaly serrated hairs of the abdomen; none of the others has more than a few spines. Genus: DIASPIS, Costa. Female puparium more or less, but never quite, circular; sometimes flat, but more usually convex; pellicles more or less marginal. Male puparium elongated, the pellicle at one end; a longitudinal carina, or keel, appears in the middle. Groups of spinnerets, five. Mr. Comstock (Entom. Rep., Cornell Univ., 1883, p. 85) remarks that, when the pellicles of the female of this genus are marginal, it might be difficult to distinguish it from Chionaspis, as the male puparia are alike in both. As regards the species observed hitherto in New Zealand this difficulty has not occurred. 10. Diaspis Boisduvalii, Signoret; Ann. de la Soc. Entom. de France, 1868, p. 433. N.Z. Trans., Vol. XI., 1878, p. 200; Vol. XVII., 1884, p. 23. (Plate IV., Fig. 5.) Female puparium oval, nearly circular, flattish; colour, yellowish-grey; diameter, about 1/12in. Male puparium elongated, white, with a strong median keel, and with the edges raised so as to appear like two other keels; length, about 1/20in. The male puparia frequently occur massed in great numbers, and covered with white hairs and fluff. Adult female rather elongated, oval, or somewhat pear-shaped; the body corrugated, the cephalic portion smooth. At each side, on a level with the rostrum, or a little above it, is a protruding lobe, which is characteristic. Colour, light-yellow. Abdomen ending in two lobes, not prominent, and with a depression between them; beyond the lobes are many serrations, with small lobelike projections and spiny hairs. Five groups of spinnerets: uppermost group with five to eight orifices[L]; the two upper side groups with twenty to twenty-five; lower side groups, fifteen to twenty. A few scattered single spinnerets. [L] Mr. Comstock (Entom. Rep., Cornell Univ., 1883, p. 87) gives eight to fifteen orifices for the uppermost group. Adult male very small, about 1/40in. in length; colour, reddish-yellow; antennæ of ten joints, all with hairs except the two first; femora and tibiæ slender, tarsi thick at the base, and tapering to the claw; digitules, fine hairs. The first and second pair of legs appear somewhat widely separated, owing to the length of the coxæ. Habitat--On several hothouse plants, Christchurch and Wellington; and on wattle in gardens, Wellington.