72 SYRPHIDE. 
and below, an oblique band running to the superior and inferior 
corners of the eyes; proboscis black; antennz short, black, brownish 
towards the base; third joint oval; arista long, yellowish, feathered 
with long hairs. Thorax black, covered with dense and_ short 
reddish hairs; the ground-colour is deep black behind the suture 
and grey in front of it, and consequently the thorax viewed from 
behind appears to be banded; pleure grey pollinose, the hairs 
becoming paler below. Scutellum brown, clothed with hairs like 
those on the main portion of the dorsum of the thorax, reddish 
tomentose on the hind border and below. Squamule blackish, 
with a dark fringe; halteres dirty yellow. Abdomen entirely 
blackish brown, somewhat dark reddish on the sides of the second 
and on the fourth segment; the bull are black, disposed as im 
bulligera, the largest and most prominent bulla being that on the 
second segment; the latter also exhibits a basal band of short 
yellowish hairs, which is broader towards the sides; hairs on the 
following segments more golden. Venter black. Legs black, the 
tibiz whitish at the base, those of the hind pair more narrowly ; 
hair short and dense, mainly black on the upper side of femora and 
yellow on the tibize, which are brown in the case of the two anterior 
pairs; hind tibie broad, on the mside with a black, on the outside 
with a yellow fringe; all the tarsi red, those of the first pair very 
short and broad. Wings appearing rather dark on account of the 
short and dense pubescence, which covers all the surface from the 
fore border to the line formed by the subapical, postical cross-vein 
and seventh vein; the hind border is therefore narrowly hyaline, 
but in the axillary cell there is a broad spot of pubescence ; alula 
also pubescent; the extreme base of the wings is blackened; there 
is also a broad dark median band running from the stigma to the 
end of the second basal cell; this band is darker towards the small 
cross-vein; kink in the third vein deep, angular, with only the 
rudiment of an appendix; lower angle of the discal cell with a 
long appendix. 
Lype 2, a single specimen from the Uganda Protectorate, Daro or 
Durro Forest, Toro, 4,000-4,500 ft., 25-29. x. 1911 (S. 4. Neave). 
There is also an aberrant female from Obuasi, Ashanti, W. Africa, 
2 vii. 1907, ‘“Secaught on flower” (Dr. W. AL. Graham), which I 
regard as a melanic form of the present species. The hairs on 
head, thorax, and scutellum are grey, not fulvous ; the abdomen is 
entirely shining black, even at the base and distal extremity, and 
the hair, including the lateral fringe, clothing it is grey, not 
volden; the fore tibie are black instead of brown, and the fringe 
on the hind tibie is black on the outer as well as on the inner side. 
The eyes seem to be without distinct bands. Wings with the 
same pattern and pubescence as in the type, but the pubescence is 
less developed, partly wanting in the anal cell and entirely wanting 
in the axillary cell; the glabrous hind border is therefore broader ; 
the appendix to the kink in the third vein is rather long, 
