broad, orange, last 5–6 segments darkened. Thorax uniformly orange, mesonotum shining. Abdomen more brownish-ochreous (probably discoloured), entirely unmarked. Legs bright ochreous, only tibial spines black; middle tibiae with two equal ventral spines. Wings with yellowish tinge, veins hardly darker; no trace of markings. Costa reaching half way from R₅ to M₁; r-m not much shorter than stem of median fork; R₁ half as long as r-m; Cu₁ not interrupted at base; An. faint. Halteres orange.

Length of body, 4 mm.; wing, 3.7 mm.

Type: Otira (J. W. Campbell), 10th Jan., 1920, in Brit Mus. coll.

3. Anomalomyia obscura n. sp. Tonn. (Fig. 235b.)

♂ Completely black more or less shining, only basal ⅔ of tibiae, tibial spurs and metatarsi obscure orange. Pubescence of whole body and appendages yellow. Wings with moderately distinct markings: spot at base of cell R₅, another darker one along distal half of R₅ and gradually merging in apical brown shadow; basal half of cell M₁ clear. Venation as in minor. Structure of hypopygium quite different as shown in fig. 235b. Only one ventral bristle on middle tibiae.

Length of body 2½ mm.; wings, 3 mm.

Type: Otira (Tonn.) 9th Feb., 1922, in Cawthron Inst. coll.

4. Anomalomyia subobscura n. sp. Tonn.

♀ Body completely black as well as head and its appendages. Legs mostly yellow; coxae and all ventral face of femora blackish, tibial spurs yellow, tarsi darker towards tip; two subequal ventral bristles on middle tibiae. Wings with very faint markings arranged as in obscura. Wing-shape somewhat more elongated than in other species; tip of Sc at level of fork of Cu which is placed distinctly before base of M; r-m at least equal to ¾ of stem of M, branches of which are rather faint at tip.

Length of body 2½ mm.; wing, 3 mm.

Type: Tahunanui, Nelson, on sea-beach (Tonn.), in Cawthron Inst. coll.

5. Anomalomyia basalis n. sp. Tonn. (Fig. 233.)

♂ Head brown, palpi yellowish, antennae brown, scape somewhat lighter. Mesonotum orange with two lateral black stripes and a trace of a median one, scutellum orange, rest of thorax brownish-black. Abdomen black, base and hind border of second segment orange; hypopygium black, its structure as in fig. 233. Legs: coxae yellow, femora 1 and 2 black underneath at base, hind femora black at base and apex, tarsi mostly yellow; two bristles on ventral face of middle tibiae. Wings with moderately conspicuous markings, a rather faint shadow near base of cell R₅, the whole apex of wing darkened and more intensively under distal part of R₅, no clear space in middle of cell M₁; r-m nearly equal to stem of M. Halteres yellow.

Length of body, 3 mm.; wings, 3 mm.

Type: Otira (Tonn.), 9th Feb., 1922, in Cawthron Inst. coll.

6. Anomalomyia affinis n. sp. Tonn. (Figs. 70, 235c.)

♂ Head and appendages brown, first antennal segment slightly lighter. Mesonotum dark orange with three more or less fused dark stripes on disc; the rest of thorax brown. Abdomen shining black; hypopygium also black, its structure as in fig. 235c, differing but slightly from the one of flavicauda. Legs mostly yellow; tip of coxae 2 and 3 black, also tip of hind femora; the two ventral bristles of middle tibiae subequal. Wings with a conspicuous dark spot at base of cell R₅, another one below distal part of R₅ which extends into the dark shadow of wing-tip, middle of the cell M₁ free. Halteres yellow.

♀ Similar to male, mesonotum lighter, first half of antennae more or less orange.

Length of body, 2½ mm.; wing, 3 mm.

Type: Otira (Tonn.), 8th Feb., 1922, in Cawthron Inst. coll.

Allotype: idem.

Paratypes: idem.

Sometimes the thorax is dark with exception of the shoulder and the scape is more or less orange.

7. Anomalomyia thompsoni n. sp. Tonn.

♀ Head orange, ocelli black, middle one distinct although small; palpi orange; base of antennae orange their tip darkened. Thorax rather bright orange. Abdomen shining brown, first segment and terminal lamellae orange. Legs orange with strong black bristles and orange tibial spurs; tip or tarsi darkened. Wing rather elongate, with a distinct yellow tinge, chiefly on anterior border and with apical fourth blackish, the limit between the two differently coloured areas along a straight transverse line; r-m not quite twice as long as last segment of R₁: fM below base of Rs. Halteres orange.

Length of body, 3 mm.; wing, 4 mm.

Type: Lake Brunner, 21st Dec., 1925 (Tonn.), in Canterbury Mus. coll.

8. Anomalomyia flavicauda n. sp. Edw. (Fig. 235.)

♂ Very similar to A. minor, differing as follows:—Middle tibiae with the two ventral spines subequal in length. Hypopygium yellow except towards tip; claspers differently shaped, with short blunt spines all over inner face, none of them, however, forming combs as they do in A. minor; aedoeagus also quite different in structure. Costa reaching more than half way from R₅ to M₁; fCu more distinctly before base of r-m; Cu₁ narrowly interrupted at base. A small but distinct spot filling base of cell R₅; a larger dark cloud crossing this cell beyond middle, but leaving tip of wing clear; cell M₁ slightly darkened at base and beyond middle; Cu₁ distinctly dark-bordered above as well as below; An. stronger and darker.

Type: Ohakune (T. R. Harris), Apl., 1923, in Brit. Mus. coll.

9. Anomaloyia viatoris n. sp. Edw. (Figs. 68, 234.)

♂ Head black, with yellow bristles. Palpi and antennae entirely black; first flagellar segment about three times as long as broad, the remainder fully as long as broad. Thorax entirely blackish, slightly shining, bristles all yellow. Abdomen, black, except for the ochreous hypopygium.