"Face smooth. Palpi long, straight, porrected, roughly scaled above and beneath. Antennæ in male pectinated on inner side only. Fore-wings with vein 6 from a point with 9, 7 from angle of areole, 10 anastomosing moderately with 9, 11 separate, approximated to 10 in middle, 12 free. Hind-wings with veins 6 and 7 separate, 8 free, closely approximated to 7 from base to near transverse vein."--(Meyrick.) (See Plate II., figs. 44 and 45, neuration of _D. petrina_.) There are three species belonging to this genus known in New Zealand. DICHROMODES NIGRA, Butl. (_Cacopsodos niger_, Butl., Proc. Zool. Soc., Lond. 1877, 395, pl. xliii. 4. _Dichromodes nigra_, Meyr., Trans. N. Z. Inst. xx. 60.) (Plate VIII., fig. 40.) This little insect has been taken at Nelson. The expansion of the wings is 7/8 inch. _All the wings are dull black. The fore-wings have a darker central area, bordered by two jagged pale grey transverse lines_, the first at about one-third and the second at about two-thirds; there is also a faint line near the termen. The hind-wings have a very obscure dark central line. The perfect insect appears in February. It occurs quite commonly on the track to the Dun Mountain, near Nelson, frequenting openings in the birch forest, where it may be captured at rest on bare ground in the hot sunshine, at elevations of from 1,500 to 2,000 feet. DICHROMODES GYPSOTIS, Meyr. (_Cacopsodos niger_, Meyr., Trans. N. Z. Inst. xvi. 94 (nec Butl.). _Dichromodes gypsotis_, Meyr., Trans. N. Z. Inst. xx. 60.) This insect was discovered by Mr. Meyrick at Lake Wakatipu in the South Island. The expansion of the wings of the female is 13 mm. (½ inch). "Fore-wings rather narrow, costa sinuate, termen sinuate; white, slightly mixed with grey; dorsum narrowly grey; a slender black fascia almost at base; a slender black fascia at one-third, dentate inwards above middle, dilated on costa; a slender black fascia beyond middle, sharply angulated in middle, dilated on costa, connected below middle with preceding fascia by a suffused bar; close beyond this a rather broad parallel grey fascia; an indistinct grey subterminal line. Hind-wings moderate; termen rounded dark grey."--(Meyrick.) Taken in December, at an elevation of about 1,500 feet above the sea-level. DICHROMODES PETRINA, Meyr. (_Dichromodes petrina_, Meyr., Trans. N. Z. Inst. xxiv. 216.) (Plate VIII., fig. 39.) This dull-looking little insect has occurred at Paikakariki and Wellington in the North Island, and at Kekerangu in the South Island. The expansion of the wings is ¾ inch. _The fore-wings are dull greenish-grey; there is a {79}black, wavy, somewhat broken transverse line at about one-third, and another at about two-thirds, enclosing a slightly darker central band, with a black dot above middle_; there is also a darker shading on the termen, and an obscure wavy paler line. _The hind-wings are grey_, with an obscure wavy central line.