47 
line and a broad sub-apical band ; apex with a clear triangular space ; 
the anterior basal, and succeeding cell clearer than the rest. Male 
Thorax red-brown, covered with grey dust. Abdomen black, with 
narrow grey bands to all the segments. Nervures of wing all 
margined with brown. Fore tibiae in both sexes white; the 
remaining segments blackish. 
MALE. Head: Eyes dull bronzy-brown (in dry specimen); ocelli 
ochreous ; space between the eyes black, shining, brown below . 
clypeus and cheeks grey, the latter with long, silken, white pubescence , 
posterior surface of head dull grey. Antennae black, basal segment 
clothed with grey dust, the rest with ochreous-brown pubescence 
Proboscis and labium black. Thorax in front of transverse suture, 
dull castaneous, with a narrow, faintly-indicated median line, and two 
narrower sub-median lines, which terminate in front as two black- 
depressions; margins dusky greyish-brown; suture opposite the sub- 
median lines orange-brown, continued downwards as a short narrow 
streak ; posterior half of thorax slightly darker than the anterior; 
the whole is covered with a greyish powder, and scanty black 
pubescence; scutellum and pleurae grey, but the latter are paler than 
the former. Abdomen smoky-black with narrow grey apical bands to 
the segments, these gradually diminish towards the apex, until the) 
entirely disappear on the last one; venter of the same colour and 
banded as on the dorsum. Legs black; mid femora dark piceous . 
upper two-thirds of anterior tibiae dull white, the remaining third 
black. Wings with the nervures dark brown, all with a broad diffuse 
band of orange-brown surrotmding them. 
Length 16111m.; length of wing 15 mm. 
T EMALE.— Head as in the male, but the face is pale ochreous 
Thorax rich dark brown, with two, narrow, sub-median pale fulvus 
lines which gradually darken and entirely disappear at the transverse- 
suture ; margins with a well-defined band of pale fulvus pubescence 
which is continued round the margin of the scutellum, and in front 
extends over the pleurae. Abdomen black, piceous in some lights, 
basal segment pale fulvus with the fringe of the pubescence paler ; 
second, third and fourth segments with a conspicuous narrow' gre\ 
apical band ; venter with similar bands on the second to the fifth 
segments. Legs as in the male, but the anterior tibiae have the basal 
half only of a pale ochreous or dull white colour. 
