16 SYRPHID ®. 
Chrysogaster (Orthoneura) pecilops, sp. n. y 
3. Length 65 mm. 
Nearly allied to the European nobilis, Fall., but at once dis- 
tinguished by the spotted eyes, shorter rectangular third antennal 
joint, and hyaline wings. It is also allied to my pecilophthalma, 
and belongs to the same group, but may be distinguished at once 
by the bare eyes and by the thorax being without black pattern. 
Head shining eneous, clothed with whitish hair, which is 
longer on the broad frontal triangle and, wanting towards the 
middle of the face; anterior edge of “buecal cavity very prominent ; 
vertical triangle blackish, much smaller than in nobilis, while the 
eves are 1n contact for a greater distance; eyes bare, with many 
confluent brown spots, which are very different from these of 
nitida, Wied., and like those of pecilophthalma; antenne dark 
vellowish brown, the third joint only twice the length of the first two 
together, rectangular, but rounded at the end; ones blackish, quite 
bare. ‘Thorax “shining neous, but lightly punctate and rather 
dullish, with short white hair, longer on the pleure; with two 
approximated longitudinal dorsal white stripes in front. Scutellum 
large, margined, coloured, and punctate like the thorax. Squamule 
rather large, white, the inferior with a very long white fringe ; 
halteres pale yellowish ; plumule white. Abdomen not m: areined, 
shining neous, with white pubescence, which is longer on the belly: 
the whole dise dull black; the last segment simple; genitalia large, 
highly polished, twisted to the right. Legs strong, wholly 
blackish zeneous, with very short pubescence ; the basal joints of 
fore and middle tarsi a little thickened. Wings wholly hyaline, 
without any distinct pattern; stigma and veins yellowish, the 
latter darkened towards the end; subapical cross-vein perpendicular, 
not recurrent ; vena spuria distinct, but not chitinised. 
Type 3, a single specimen from Durban, Natal (4. Muir), 
8. Chrysogaster (Orthoneura) spiloptera, sp. n. 
Q. Length 5 mm. 
An elegant blackish-zeneous species, with yoeRaiied eves and 
blaek legs, velvety black bands on abdomen, and < \_wing-pattern 
ree alling that of the North-American species nitida, Wied. 
The present and the following species, known only in the female 
sex, are evidently related and unite the characters ot Orthoneura 
with those of Liogaster, to which they should be referred if the 
eves of the male prove to be separated ; in neither species, however, 
has the frons of the female any transverse furrows. They both 
live in swamps, like our European species. 
Head very large, hemispherical, shining black with faint bluish 
reflexions ; frons broad, very long, smooth, gently convex in the 
middle, almost bare, more shining and neous above the antennz, 
with only the beginning of a few oblique furrows near the base; 
face carinate below and produced towards the mouth-edge, bare. 
lightly rugulose towards the sides ; eyes bare, dark brown, with no 
