The expansion of the wings of the male is 5/8 inch, of the female ¾ inch. _The fore-wings are pale ochreous; there is a narrow darker area at the base followed by a narrow oblique pale band_; then a broad central band, formed of numerous oblique, wavy, brown, transverse lines, next, a rather narrow curved pale band, followed by several small irregular patches on the termen, sometimes forming a dark brown terminal band; all the markings are much darker on the costa, and portions of the costa, termen, and dorsum are frequently tinged with green. The hind-wings are pale ochreous; there are numerous wavy, pale brown lines on the dorsum, becoming obsolete towards the costa. The termen of all the wings is edged with fine black crescents. The cilia are pale ochreous barred with dark brown. The perfect insect may be met with from September till February, but is most abundant in the early spring. It is extremely common in the Wellington Botanical Gardens, frequenting the forest gullies, where numerous specimens may be easily dislodged from amongst the dense undergrowth. This moth rests with expanded wings on the leaves and stems of shrubs, but is extremely difficult to find in such situations, the colouring of the insect causing it to closely resemble the droppings of birds. {44}CHLOROCLYSTIS LICHENODES, Purd. (_Pasiphila lichenodes_, Purdie, Trans. N. Z. Inst. xix. 70.) (Plate VI., figs. 15 and 16, varieties.) This extremely interesting species has occurred at Wellington in the North Island, and at Dunedin in the South Island; it has also been found at Stewart Island. The expansion of the wings is about ¾ inch. The fore-wings are dull green; _there is a large pale brown area near the base, divided by fine black lines into three distinct patches_; the central portion of the wing is mottled with black, pale brown, and dull green; _there is a very broad, irregular band of chocolate-brown near the termen, outlined with black towards the base and with white towards the termen, the white line almost dividing the band into four or five patches_. The hind-wings are dull greenish-brown; there are several irregular black and white transverse lines and small patches of chocolate-brown, the markings being more distinct towards the dorsum. The cilia of all the wings are pale brown barred with dark brown. I have observed that in many specimens of this species the ground colour is entirely pale brown instead of green; the markings, however, are not variable. The perfect insect appears from November till February. It frequents forests, resting with outspread wings on lichen-covered tree-trunks, where its wonderfully perfect protective colouring may be seen to great advantage. The remarkable brown patches on the wings have undoubtedly been acquired for this protective purpose, and Mr. Purdie's name is certainly a most appropriate one. It is not, I think, a common species. CHLOROCLYSTIS INDICATARIA.