The perfect insect appears in January. Mr. Fereday's specimens, which formed the basis for the above figure and description, were captured on a bare mountain side at an elevation of about 4,000 feet. Mr. Hawthorne has directed my attention to the remarkable similarity existing between the markings on the fore-wings of this species and those on _Xanthorhoe stinaria_. NOTOREAS ORPHNÆA, Meyr. (_Pasithea orphnæa_, Meyr., Trans. N. Z. Inst. xvi. 85. _Notoreas orphnæa_, ib. xviii. 184.) This species was discovered by Mr. Meyrick in the South Island at Lake Wakatipu. The expansion of the wings of the female is from 28 to 30 mm. (about 1¼ inches). "Fore-wings moderate, termen rounded; dark fuscous, mixed with yellowish and whitish, which tend to form alternate fasciæ; a discal dot and numerous curved irregularly dentate blackish lines, varying in strength and intensity; cilia barred with blackish and whitish. Hind-wings moderate, termen rounded; dark fuscous; a blackish discal dot; a cloudy whitish irroration forming a double curved fascia beyond middle, and a dentate subterminal line; cilia as in fore-wings. "Imitative in colour of the dark lichen-grown rocks. {72}"I took three specimens almost on the summit of Ben Lomond, Lake Wakatipu, at 5,600 feet, in January."--(Meyrick.) NOTOREAS ISOLEUCA, Meyr. (_Notoreas isoleuca_, Meyr., Trans. Ent. Soc. Lond., 1897, 386.) (Plate VIII., fig. 27.) This little species has been taken in the South Island on the Craigieburn Range, near Castle Hill. The expansion of the wings is about ¾ inch. _All the wings are very dark blackish-brown; the fore-wings have five slender wavy white transverse lines. The hind-wings have three white transverse lines_, the first near the base, the second near the middle, and the third, which is very slender and considerably broken, near the termen. _The cilia of all the wings are white, barred with blackish-brown._ The perfect insect was captured in January, amongst a varied growth of stunted Alpine vegetation, at an elevation of about 5,600 feet. NOTOREAS MECHANITIS, Meyr. (_Pasithea mechanitis_, Meyr., Trans. N. Z. Inst. xvi. 86. _Notoreas mechanitis_, ib. xviii. 184.) (Plate VIII., figs. 9, 10, 11, varieties.) This insect has occurred in the South Island at Mount Arthur, Arthur's Pass and Mount Hutt.