Adult female greenish-grey, turning to brown after gestation; filling the sac; shrivelling at gestation. Anal tubercles rather large and conspicuous. Anogenital ring small, with eight (sometimes six?) fine short hairs. Antennæ of six joints. Feet normal, slender; lower digitules narrow and rather long. Body segmented; segments not very distinct. On the middle of each segment a transverse row of small slender conical spines not set closely together. Very many small scattered oval spinneret orifices. Adult male unknown. Habitat--On _Myoporum lætum_ (ngaio), _Elæocarpus dentatus_ (hinau), &c.; throughout the Islands. Allied to _E. buxi_, Signoret (European), and _E. multispinus_, ante: but different from both in colour, in the arrangement of the spines and spinnerets, and in the form of the antennæ. Genus: RHIZOCOCCUS, Signoret. Adult females naked, usually stationary; body segmented; anal tubercles conspicuous. Antennæ of six or seven joints. Feet present. Anogenital ring inconspicuous, with fine hairs. Male pupa enclosed in a cottony sac. Mr. Comstock proposes (Ann. Rept. of Entom., U.S. Agric. Dept., 1881, p. 339, note) to include in this genus all the species of _Eriococcus_. The organic difference disclosed by the formation of a sac in that genus and the absence of a sac in _Rhizococcus_ seems to render the separation of the two necessary. 58. Rhizococcus celmisiæ, Maskell. N.Z. Trans., Vol. XVI., 1883, p. 135. (Plate XVI., Fig. 1.) Adult female deep red in colour, elongated-oval, convex above and flattened below; length about 1/11in. The segments of the body are not very distinct. The abdomen ends in two large and conspicuous anal tubercles, each of which bears one strong and fairly long terminal seta and three other spines. The anal ring has eight hairs. Antennæ of six joints, sometimes looking like seven. Mentum doubtfully dimerous. The four digitules of the foot are long fine hairs. The tibia is a little shorter than the tarsus.[T] The trochanter bears one long hair and two short ones. A few large conical spines (spinnerets) are scattered over the body, and a row of smaller ones, like hairs with tubercular bases, runs transversely on each segment; also some circular spinnerets. At the edge of the body, all round, is a row of the large conical spines, which are set in groups of three on the posterior segments, of four or five on the median segments, and almost continuous on the head. When the insect is alive these spines are often agglutinated with cottony secretion so as to give the appearance of a short fringe. The four spiracles are somewhat large and circular. [T] See note, above, under _Eriococcus multispinus_. Adult male unknown. Habitat--On _Celmisia_ sp., Southern Alps, Canterbury.