Tiphobiosis montana n. sp. (Plate 19, fig. 13; text-figs. 13, 14.) ♂. Total length, 3.5 mm.; forewing, 5.2 mm.; expanse, 11 mm. Head, thorax, and abdomen dull-blackish; eyes black; vertex covered with pale-greyish hairs; antennae nearly as long as forewing, dark brown, basal segment swollen, two and a half times as long as second segment (text-fig. 13 c), the third longer and narrower than second; last segment of maxillary palpi a little longer than fourth. Legs—coxae and femora dark-brownish, tibiae and tarsi medium testaceous. Text-Fig. 14.—Tiphobiosis montana n. g. and sp., ♂. Appendages (× 50). a, dorsal view; b, ventral view; and c, lateral view. Note the long process of the tenth tergite, and the lengthening of the ninth sternite. (10 per cent. KOH preparation.) Wings.—Forewing pale testaceous, with numerous upstanding hairs of a pale-golden colour, giving the wing a slight tinge of yellowish; costal and posterior margins a little darker than rest; pterostigma 1 mm. long, darkened. From fork of Rs a cross-vein descends on to M exactly above thyridial cross-vein; a pale subhyaline space encloses these cross-veins, and another similar space occurs a little distad from from it. Hindwing subhyaline, slightly infuscated, with two cross-veins corresponding with the two mentioned above for forewing, but not quite in line with one another. Ninth sternite greatly elongated. Appendages of very remarkable