The expansion of the wings is 1-3/8 inches. _All the wings are sparsely covered with scales. The fore-wings of the male are dull reddish-brown, with numerous obscure transverse dusky stripes; there are two rather conspicuous blackish blotches on the costa_, a white dot in the middle of the wing, a wavy, pale, transverse line near the termen, and a series of black terminal dots; the veins are dotted in black. The hind-wings are very small, dull grey, with the lobe large and conspicuous. _The female is faintly tinged with green, the markings on the fore-wings are rather indistinct_; the hind-wings are small, though much larger than those of the male. The perfect insect appears from November till May. It frequents densely wooded districts, but is not a common species. Genus 2.--PARADETIS, Meyr. "Palpi short, arched, roughly-scaled beneath. Antennæ bipectinated. Fore-wings with vein 6 from below 9, 7 from below angle of areole, 10 very shortly anastomosing with 9, 11 out of 10 considerably before angle of areole, 12 free. Hind-wings with veins 6 and 7 stalked, 8 separate, united to 7 before transverse vein by an oblique bar. "This singular genus is of quite uncertain affinity, and stands at present alone. The simple areole, and connecting bar of 7 and 8, can only have arisen by modification of the normal type of this family, to which it must be referred. It is also the only New Zealand genus except _Declana_ in which the female has pectinated antennæ; but this character recurs in a few exotic genera not otherwise allied."--(Meyrick.) Plate II., figs. 27 and 28 represent the neuration of the male of _Paradetis porphyrias_, vein 2 of the hind-wings being absent in that sex. In the female, which is the sex from which Mr. Meyrick characterized the genus, the vein is present as usual. Only one species is known. {41}PARADETIS PORPHYRIAS, Meyr. (_Parysatis porphyrias_, Meyr., Trans. N. Z. Inst. xvi. 58. _Paradetis porphyrias_, Meyr., ib. xviii. 184.) (Plate VI., fig. 36 [M].) This interesting little insect has occurred in the South Island at Mount Arthur, Castle Hill, the Otira Gorge, and Lake Wakatipu. The expansion of the wings is about ¾ inch. _The fore-wings of the male are deep purplish-brown_; there is a wavy, reddish, transverse line at about one-third and another at about two-thirds; between these two lines near the dorsum there are often four, more or less distinct, yellow dots; there is an obscure orange mark at the origin of the first line and a conspicuous mark at the origin of the second. _The hind-wings are deep purplish-brown._ The cilia of all the wings are white. _The fore-wing has the apex hooked and the termen deeply excavated above and below the middle._ The female is very much paler; the lines are more distinct and the veins are marked in brown.