The expansion of the wings is about 7/8 inch. _All the wings are dark brownish-black. The fore-wings have an almost straight transverse yellow or white stripe near the base, edged with black towards the body; a rather wavy stripe at about one-third, edged with black towards the termen; then several irregular yellowish or white spots or marks, followed by a very distinct white stripe, somewhat projecting towards the termen near the middle; there is a broken fine yellow line near the termen._ The hind-wings have a shaded white or yellow transverse line near the base, another near the middle, a third, considerably finer and often broken, near the termen. The cilia of all the wings are white shaded with grey near the base, _but with no distinct bars_. The perfect insect appears from January till March, and flies with great activity in the hottest sunshine. It frequents grassy mountain sides at elevations ranging from 3,000 to 4,500 feet above the sea-level, and in these situations it is often very abundant. NOTOREAS PARADELPHA, Meyr. (_Pasithea paradelpha_, Meyr., Trans. N. Z. Inst. xvi. 86. _Notoreas paradelpha_, ib. xviii. 184.) (Plate VIII., figs. 12, 13, 14, varieties.) In the South Island this insect has occurred on Mount Arthur, and on Ben Lomond, Lake Wakatipu, at elevations of from 3,600 to 5,000 feet. The expansion of the wings is about 1 inch. The species is said to be distinguished from the preceding "by the barred cilia, the absence of any clear yellow colouring, the less prominent angulation of the post-median line and the more elongate wings."[39] (Meyrick.) The perfect insect appears in December, January and February. In habits it exactly resembles _Notoreas mechanitis_. NOTOREAS PERORNATA, Walk. (_Fidonia perornata_, Walk. 1672. _Pasithea perornata_, Meyr., Trans. N. Z. Inst. xvi. 87. _Notoreas perornata_, ib. xviii. 184.) (Plate VIII., figs. 4, 5, 6, 7, and 8, varieties.) This very pretty insect has occurred at Palmerston and Wellington in the North Island, and at Kekerangu, Mount Arthur, Lake Coleridge, Mount Hutt and Lake Wakatipu, in the South Island. {73}The expansion of the wings is about ¾ inch. _The fore-wings are dark brownish-black, with five transverse white or orange-yellow lines, which vary considerably both in width and colour in different specimens_; the two basal lines are almost straight, the rest are wavy, the last but one has, near the middle, a strong projection towards the termen. _The hind-wings are bright orange, with three or four more or less broken black transverse lines._ The termen is narrowly bordered with black; the cilia of all the wings are white, more or less distinctly barred with blackish-brown.