Wings greyish subhyaline with extensive pale-brown markings, the more conspicuous being at origin of Rs, completely traversing cell R; at stigma; along cord and outer end of cell 1st M2; slightly paler clouds at ends of longitudinal veins, most extensive in anal cells. Venation: Sc1 ending a short distance beyond origin of Rs, this distance slightly variable, Sc2 just before this origin; m-cu shortly before the fork of M. Abdomen dark brown, posterior margins of outer sternites indistinctly pale; hypopygium dark. Male hypopygium (fig. 1) with basistyles cylindrical, each with squat hemispherical lobe on mesal face at base, this lobe terminating in small tubercle set with a pencil of setae; mesal face of basistyle provided with numerous very long powerful setae. Ventral dististyle simple, a fleshy lobe unprovided with a rostrum; dorsal dististyle a very strongly curved chitinized hook. Gonapophyses with mesal apical angle a slightly curved, feebly bifid, chitinized rod. Allotype, ♂, Glenorchy, Otago, altitude 1,200 ft.; 4th January, 1923 (C. C. Fenwick). Dicranomyia aegrotans Edwards. 1923. Dicranomyia aegrotans Edwards, Trans. N.Z. Inst., vol. 54, pp. 280–81, pl. 27, fig. 22 (wing). Edwards's type was based on the female specimen mentioned, but not described, by Walker (List Dipt. Brit. Mus., vol. 1, p. 45, 1848). The type-locality is unknown. Widely distributed in both Islands. Allotype.—♂. Length, 6.5 mm.; wing, 8.3 mm. Similar to female, differing as follows: Basal flagellar segments pyriform, outermost passing into oval. Mesonotal praescutum with very broad and distinct medium brown stripe, lateral stripes paler and ill-defined, confluent internally with median stripe; scutal lobes with dark centres. Pleura heavily light grey. Legs with femora rather uniformly dark brown, tibiae and basitarsi a little paler. Wings as described for female; base of cell 2nd A strongly infuscated, coloration following distad along vein Cu. Venation: Sc1 ending just beyond origin of Rs, Sc2 some distance from its tip and very short, Sc1 alone about equal to m-cu; Rs nearly three times basal deflection of R4+5; cell 1st M2 normally open by atrophy of m. Abdomen dark brown, including the hypopygium. Male hypopygium (fig. 2) characteristic of the species. Basistyles with the mesal apical angle produced caudad into slender finger-like lobe that terminates in two large setae and one or two smaller ones; mesal face of basistyle very densely setiferous. Dististyle single, simple, base enlarged, mesal face at apex produced into conspicuous, chitinized, slightly curved rostrum bearing two long spines just before mid-length, these spines directed strongly basad. Gonapopyses pale, mesal apical angle produced caudad into short black curved spine. Allotype, ♂, Ohakune, Wellington, altitude 2,060 ft.; 15th October, 1921 (T. R. Harris). Dicranomyia repanda Edwards. 1923. Dicranomyia repanda Edwards, Trans. N.Z. Inst., vol. 54, p. 278, pl. 27, fig. 17 (wing). Edwards's types consisted of three males—two taken by Hudson near Wellington, the third by Dr. Andrew Sinclair and mentioned but not