in angle between R4 and R5, in secondary cell formed by this fusion. This formation is unique, so far as I know, in the order, but may profitably be compared with that found in forewing of Psilochorema (text-fig. 2), where a secondary cell has been formed by development of an extra cross-vein, so as to enclose within it the wing-spot as shown. In this latter case it will be noted that no fusion of R4 with R5 has taken place. Tibial spurs 2, 4, 4. Appendages of male very short. Genotype.—Synchorema zygoneura n. sp. (New Zealand.) Synchorema zygoneura n. sp. (Plate 19, fig. 7; text-figs. 11, 12.) ♂. Total length, 4 mm.; forewing, 6.7 mm.; expanse, 14 mm. Head, thorax, and abdomen brownish; eyes black; antennae and legs pale testaceous. Wings.—Forewing semitransparent subfulvous, with numerous short upright golden-grown hairs; pterostigma darker, brownish; venation brownish; fringe of pale-brownish hairs of moderate length. Hindwing hyaline, iridescent, with a fringe of short dark-brown hairs very closely set above apex of wing, but with longer, and paler hairs, less closely set, around termen and posterior margin; venation brown. Text-Fig. 12.—Synchorema zygoneura n. g. and sp., ♂. Appendages (× 55). a, lateral view; b, dorsal view. (10 per cent. KOH preparation.) Appendages very short, as shown in text-fig. 12; in the dried specimens they are sometimes scarcely to be discerned, except for the two slender and slightly clubbed pre-anal appendages. Female closely resembling male, but larger (expanse, 16.5 mm.), and usually with forewings somewhat brighter in colour. Types.—Holotype male, Mount Arthur, 4,500 ft. (23rd December, 1921, A. Philpott). Allotype female, Arthur's Pass, 2,800 ft. (19th January, 1920, R. J. T.). Also other males from Nelson (6th January, 1921, A. Philpott), Gouland Downs (7th February, 1922, R. J. T.), and females from Arthur's Pass (19th January, 1920, R. J. T.) and Queenstown (14th December, 1919, R. J. T.): all in Cawthron Institute collection. The Nelson specimen has been used for the 10 per cent. KOH preparation from which text-fig. 12 has been drawn. The Gouland Downs male and Queenstown female are slightly less subfulvous than the others, showing a distinct tinge of greyish. Habitat.—South Island of New Zealand; rare.