Insects covering themselves with secretion of cottony or felted matter Lecano-Coccidæ. Secretion felted, scarcely apparent on adult female, conspicuous on male pupæ and female of early stages; edge fringed Eriochiton. _Not yet represented in New Zealand._ Secretion felted, appearing only in the last stage, after gestation Signoretia. Secretion felted, forming a nearly complete sac on adult female before gestation Lecanodiaspis. Secretion felted, forming complete sac on adult female Philippia. Secretion cottony, covering adult female only after gestation Lichtensia. Secretion cottony, forming a complete sac on adult female before gestation Eriopeltis. Subdivision I.--LECANODIASPIDÆ, Targioni-Tozzetti. Female insects exhibiting in all stages the abdominal cleft and lobes. Larvæ free, naked, active. Females after the first metamorphosis constructing over themselves a carapace, shield, or (as called herein) test, of glassy, waxy, or horny secretion. Test apparently homogeneous, really in most cases formed of aggregated segments over the insect, and prolonged beyond the body in a flat single fringe of separate, more or less triangular or quadrate, segments. Fringe not always present or conspicuous in all stages. Males, after first metamorphosis, constructing a test of similar character but varying form. This subdivision, when first established by Targioni-Tozzetti, included only the four genera _Pollinia_, _Asterolecanium_, _Planchonia_, and _Lecanodiaspis_, all of which are apodous in the adult stage of the female. In this work the two first of these are included in a new group, Hemi-Coccidinæ; _Planchonia_ belongs to the group Coccidinæ; _Lecanodiaspis_ is left in the present subdivision. For the reasons leading to these changes, and the inclusion in this subdivision of insects retaining the feet in all stages, see N.Z. Transactions, Vol. XI., 1878, p. 207, and Vol. XVI., 1883, pp. 125-128. Genus: LECANOCHITON, Maskell. N.Z. Trans., Vol. XIV., 1881, p. 222. Test of adult female horny in texture, formed partly of secretion, partly of the pellicle of the second stage; abdominal cleft and lobes normal. 30. Lecanochiton metrosideri, Maskell. N.Z. Trans., Vol. XIV., 1881, p. 222; Vol. XVI., 1883, p. 129. (Plate VII., Fig. 1.)