Notes on Isonomeutis aumaropa Meyr. (Lepidoptera). By Alfred Philpott, Hon. Research Student in Lepidoptera, Cawthron Institute, Nelson. [Read before the Nelson Philosophical Society, 26th October, 1927; received by Editor, 28th October, 1927; issued separately, 14th February, 1928.] The genus Isonomeutis was erected by Meyrick in 1887 for the reception of a peculiar little Pyralid-like species taken at Whangarei. Since then the moth has been found at Wellington and Nelson, the probability being that it occurs in suitable localities throughout the North Island and the northern portion of the South. The larva is said by Hudson to live under the bark-flakes of the matai (Podocarpus spicata), feeding on the softer growing portion and subsequently forming a tough pupal cocoon of silk covered with fragments of bark. In the original description Meyrick placed the species in the Conchylidae (now known as the Phaloniidae), but in his “Revision of the classification of the New Zealand Tortricina” (Trans. N.Z. Inst., 43, 78) he states that after further study he has concluded that “Isonomeutis is not correctly referable to this group” (the Tortricoidea) and that he has removed it to the Plutellidae. In 1923, however, the genus is referred back to the Tortricoidea and placed, with a second species, I. restincta, in the family Copromorphidae, which includes one other New Zealand species, Phycomorpha metachrysa Meyr. Hudson has given coloured figures of the female moth and the larva in his Manual of New Zealand Entomology, pl. 13, figs. 2 and 2A, but, as far as I am aware, no structural figures have yet been published. It may be useful, therefore, to present a series of these and to comment on their characteristics with a view to more definitely fixing the systematic position of this interesting and puzzling genus. The Venation. It will be noted that in the anal area of the forewing there is only one vein, and that it is not forked basally. This vein may be called 2A or 2A + 1A. The anal furrow is hardly marked at all, there being only the merest indication of it near the base. Culb is rather remote from the angle, but Cula, the branches of M, and R2, R4, and R5 are almost equidistant at their bases. R2 rises from the cell slightly basad of Culb, and R1 at about middle of cell. Se is in a normal position, pursuing a course about halfway between the costal margin and the radius. No part of M is present within the cell. In the hindwing 3A is present and 2A and 1A are coincident except for a short distance at the base. The anal fold is well marked but does not contain any vein. Culb is fairly remote from the angle of cell; Cula and M3 are connate; M1 rises from about the middle of the oblique discocellulars with M2 a little nearer to it than to M3;