"A fine species, with a peculiar bluish tinge. "I took two specimens at rest on rock-faces in the Otira Gorge, at 1,800 feet, in January, and saw others."--(Meyrick.) XANTHORHOE CINEREARIA, Dbld. (_Cidaria (?) cinerearia_, Dbld., Dieff. N. Z. ii. 286. _Larentia (?) invexata_, Walk. 1199; Butl., Cat., pl. iii. 11. _Larentia semisignata_, Walk. 1200. _Larentia inoperata_, Walk. 1201. _Larentia diffusaria_, Walk. 1201. _Larentia punctilineata_, Walk. 1202; Butl., Cat., pl. iii. 12. _Cidaria dissociata_, Walk. 1734. _Cidaria semilisata_, Walk. 1735. _Larentia corcularia_, Gn., E. M. M. v. 61. _Larentia infantaria_, Gn., E. M. M. v. 62. _Helastia eupitheciaria_, Gn., E. M. M. v. 95. ? _Cidaria sphæriata_, Feld. cxxxi. 14. _Larentia cinerearia_, Meyr., Trans. N. Z. Inst. xvi. 83.) (Plate VIII., figs. 2 and 2A, varieties.) This species is extremely abundant, and generally distributed throughout the country. The expansion of the wings is from 5/8 inch to 1 inch. _The fore-wings vary from pale to dark grey; there are generally four more or less distinct blackish marks on the costa, forming the beginning of transverse bands_; the rest of the wing is marbled with dark-grey or black, the disposition of the markings varying exceedingly in different specimens. The hind-wings are pale grey, with a black dot above the middle. The variation existing in this species is very great, and is thus described by Mr. Meyrick:[38] "Three main forms occur: one large, greyer, and more uniform; a second of middle size whiter and generally strongly marked sometimes bluish-tinged, only found in the hills; and a third small greyish but ochreous-tinged, strongly marked; these are connected by scarcer intermediate forms, and are, I believe, due to the direct effect of food and situation. "The larva feeds on lichens." The perfect insect appears from October till March, and frequents a great variety of situations. The colouring of the fore-wings is beautifully adapted for protection on lichen-covered banks, rocks, or fences, where specimens may often be found resting with closed wings during the daytime. This species flies rather freely at evening dusk, and may then be taken plentifully at sugar, blossoms or light. It is, however, a difficult matter to procure specimens in really good condition for the cabinet, as the insect is so extremely restless when confined in a box that if it is not killed at once, it will speedily injure itself during its struggles to escape. This moth is found at elevations ranging from the sea-level to 3,500 feet. XANTHORHOE ANTHRACIAS, Meyr. (_Larentia anthracias_, Meyr., Trans. N. Z. Inst. xvi. 84.) This species has occurred in the South Island at Mount Hutt and Lake Wakatipu.