C. fulvipes n. sp.

♀. Eyes bare, dichoptic; front brilliant purple, sparsely clothed with black hair, a transverse median depression connected by a distinct longitudinal furrow with apex of ocellar triangle; the latter cupreous and bordered with black; frontal orbits at antennae with a silvery pubescence; lunular area black. Antennae situated well up on head, separated at base, 1st and 2nd joints black; 3rd joint of type and of all other specimens lost. Face shining purple, a patch of silvery tomentum and not excavated beneath antennae; distinct central knob black; sides of face sparsely clothed with short hair; facial orbits narrowly silvery pubescent; oral margin projecting somewhat; cheeks black and clothed with short silvery hair. Proboscis blackish-brown, palpi paler. Occiput purplish-black, depressed, posterior orbits narrowly silvery.

Thorax and scutellum brilliant cupreous, indistinctly clothed with very short hair. Wings somewhat translucent, stigma clouded with tawny; cell Cu₂ very broad owing to veins 1st A and Cu curving into anal angle and cell M respectively; on one wing cross-vein r-m is forked, thus meeting vein M₁₊₂ in two places; halteres rather tawny. Legs purplish-black, except apices of femora, tibiae, base of all protarsi, and apex of posterior protarsi, which are tawny. Anterior tarsi somewhat broadened; posterior tibiae slightly and middle tibiae distinctly broadened.

Abdomen rather ovate, shiny purplish-black.

♂. Eyes holoptic for a short distance; front black with some erect black hair and a greyish tomentum extending into short white hair below on facial orbits. Antennae black. Face greenish-black, central knob pronounced, black.

Thorax and scutellum rather dull black, with a coppery and purplish tinge and clothed with greyish hair. Legs as in ♀ but tibiae with distinct central dark area; anterior and middle tibiae, particularly the latter, greatly broadened except for very narrow basal portion; posterior tibiae slightly thickened, their protarsi swollen; anterior protarsi and epitarsi broadened somewhat.

Abdomen linear, somewhat shiny, almost black with pair of large glaucous spots one on each side of 2nd, 3rd, and 4th segments. Genitalia brownish.

♀. Length, 6 mm. ♂. Length, 7 mm.

Holotype: ♀, No. 1259, D. M.

Allotype: ♀, No. 1259A, D. M.

Habitat.—Otira (R. J. Harris); Mount Rolleston and Arthur's Pass (J. W. Campbell).

C. captalis n. sp.

♀. Eyes bare, dichoptic; front broad, greenish-black, clothed with delicate white hair; a silvery area of hair, seen in some lights, on each orbit opposite antennae. Antennae situated above middle of head, black with greyish tomentum; 3rd joint oval. Face convex, shiny black, central knob distinct; a silvery patch of tomentum below antennae; a distinct furrow on face from antennae to lower eye-margin. Proboscis and palpi black, Occiput black, depressed, orbits clothed with short silvery hair.

Thorax and scutellum rather shiny greenish or bluish black, clothed with short silvery hair. Wings rather translucent, stigma tawny; halteres