1944] Studies on Syrphid Flies 39 
vittae of pale shining yellow pile which is directed more or less 
forward. Pile and pubescence of the mesopleurae whitish; scutel- 
lum with a strong brassy cast, faintly impressed rim, its pile 
about half and half black and pale. Abdomen: elongate, narrow- 
est at the end of the third segment where it is but little less wide 
than the base of the third segment. Ground color anteriorly very 
dark brown, almost blackish, becoming more brassy on the fourth 
segment. First segment shining dark reddish-brown with a 
strong brassy cast that is quite absent upon the next two seg- 
ments. On either side of the second segment, widely separated, 
is a pair of large yellow spots opaque, rectangular, with corners 
rounded, the anterior lateral corner slightly attenuated, the pos- 
terior corners vaguely attenuated, widely separated from the 
lateral margins. On the third segment there is a pair of similar, 
smaller, more diffuse and more obscure spots. Pile of fourth seg- 
ment wholly semiappressed, pale yellow and quite abundant. 
There are not over three or four black hairs in the middle of this 
segment. Pile of fifth segment erect and wholly pale. Legs: all 
of the femora very dark brown almost black with narrow reddish 
apices; the hind pair with the usual rather extensive thickness; 
its pile is pale but its ventral spines black, quite long and sharp 
and beginning quite in the middle of the ventral surface of the 
femora. Anterior tibiae blackish-brown upon the apical half 
dorsally ; and ventrally upon the apical two-thirds brown quite to 
the apex. Middle tibiae almost wholly yellowish, pale whitish on 
the basal half, faintly brownish apically, the spines black. Pos- 
terior tibiae quite arcuate, the basal third pale yellow, the re- 
mainder dark brown, the apical spur triangular but quite sharp 
and rather long; the pile is wholly pale except along the whole of 
the ventral margin there is a narrow dense band of erect black 
pile. Basal three joints of anterior and middle tarsi wholly pale 
yellow, their apical and hind tarsi light brown. Wings: lightly 
tinged with brown, stigmal cell wholly dark brown; there is no 
spur from the posterior corners of the first and second posterior 
cell. 
Holotype: No. 23791, one female, labelled ‘ proximo ’ beneath 
which is the label — “ variety of ejuncida ” Loew coll. There is 
no locality. It is presumably from the West Indies. 
