The perfect insect appears in January, February, and March. Described and figured from a specimen in Mr. Fereday's collection. HYDRIOMENA ARIDA, Butl. (_Melanthia arida_, Butl., Cist. Ent. ii. 505. _Cidaria chaotica_, Meyr., Trans. N. Z. Inst. xvi. 76. _Cidaria arida_, Meyr., ib. xvii. 64.) (Plate VII., fig. 15.) This species has occurred in the South Island at Akaroa, Mount Hutt, Arthur's Pass, and Dunedin. The expansion of the wings is 1 inch. The fore-wings are dull grey; there is a fine yellowish {51}transverse line near the base, _and a very broad central band with a prominent projection somewhat below the middle, almost touching the termen_; there is a brown dot above the middle of the wing and numerous fine brown wavy lines in the central band; the veins are marked in white near the termen. The hind-wings are pale ochreous, with a few very faint transverse marks near the dorsum. The termen of the fore-wings is slightly bowed in the middle. The perfect insect appears in January and February, and frequents forest, sometimes being found as high as 2,600 feet above the sea-level. Described and figured from a specimen in Mr. Fereday's collection. HYDRIOMENA SIRIA, Meyr. (_Cephalissa siria_, Meyr., Trans. N. Z. Inst. xvi. 93.) (Plate VI., fig. 48.) This odd little species was discovered by Professor Hutton at Dunedin. The expansion of the wings is 5/8 inch. _The fore-wings are rich brown with two transverse bands of darker brown_; the first near the base, rather narrow; the second near the middle, considerably broader, especially on the costa. _The hind-wings are bright orange._ The termen of the fore-wings is slightly excavated below the apex, and considerably bowed a little below the middle. Described and figured from a specimen in Mr. Fereday's collection. Genus 7.--EUCHOECA, Hb. "Face smooth, flat. Antennæ in [M] shortly ciliated. Palpi short, slender, loosely scaled. Fore-wings with areole simple. Hind-wings with vein 8 anastomosing with cell to beyond middle. "A small genus containing a few species distributed throughout the northern hemisphere and one Australian."--(Meyrick.) We have one species. EUCHOECA RUBROPUNCTARIA, Dbld. (_Ptychopoda rubropunctaria_, Dbld., Dieff. N. Z. li. 287. _Asthena visata_, Gn. ix. 438. _Asthena_, Gn., E. M. M. v. 42. _Asthena pulchraria_, Butl., Cat. pl. iii. 18. _Hippolyte rubropunctaria_, Meyr., Trans. N. Z. Inst. xvi. 60. _Epicyme rubropunctaria_, Meyr., ib. xviii. 184.) (Plate VI., fig. 35.) This little species is common and generally distributed throughout both the North and South Islands, and has also occurred at Stewart Island.