The expansion of the wings is about ¾ inch. _The fore-wings are very dark, glossy brown; there is a pale yellowish transverse line near the base, a broader, rather wavy orange-yellow line a little before the middle, another still broader at about two-thirds, and an indistinct fine line near the termen. The hind-wings are rich orange-brown, with three broad, wavy, dark brown transverse bands; the termen is narrowly margined with dark orange-brown._ The female is generally rather paler than the male, very faintly marked specimens occasionally occurring. The perfect insect appears in January and February. It frequents the tussock openings in the forest on the Tableland of Mount Arthur, at elevations of from 3,000 to 4,000 feet. In these situations it appears to be fairly abundant, flying actively in the hottest sunshine. LYTHRIA EUCLIDIATA, Gn. (_Coremia euclidiata_, Gn. x. 420. _Coremia glyphicata_, ib. 420. _Fidonia catapyrrha_, Butl., Proc. Zool. Soc. Lond. 1877, 392, pl. xliii. 2. _Stratonice catapyrrha_, Meyr., Trans. N. Z. Inst. xvi. 64. _Stratonice euclidiata_, ib. xvii. 63. _Arctesthes euclidiata_, ib. xviii. 184. _Arcteuthes euclidiata_, ib. xx. 47.) (Plate VIII., fig. 35 [M].) This pretty little species has occurred in the South Island at Lake Rotoiti near Nelson, Lake Guyon, Otira Gorge, Dunedin, and Mount Linton near Invercargill. {69}The expansion of the wings is ¾ inch. The fore-wings are dark greyish-brown speckled with black and white; there is a curved black transverse line near the base, followed by a white line, then two black lines close together followed by another white line, then a broad black line followed by a pale central band containing a well-marked central dot, beyond this there are two angulated black lines, and a very conspicuous white line; there is a broad black shading on the termen, traversed by a rather obscure fine white line. The hind-wings are rather narrow, yellowish-orange speckled with black near the base, there is a strongly angulated black line near the middle, and an obscure blackish band near the termen. _On the under side the fore-wings are yellow, with two black transverse bands from the costa near the termen and a red mark near the apex; the hind-wings are streaked with white and yellow, and broadly bordered with red on the costa and termen; there are two very broad black transverse bands._ The female is paler than the male, with the dark markings rather narrower. The perfect insect appears in February and March, and frequents open, sunny places, at elevations of from 1,000 to 2,000 feet above the sea-level. Genus 13.--DASYURIS, Gn.