178 Annals of the South African Museum. 
portions paler, browuish or brownish -yellow ; lateral stripes very 
broad, especially anteriorly ; scutum obscure yellowish medially, the 
lobes largely shiny black ; scutellum obscure yellowish-brown, almost 
black caudally ; postnotum with the dorsal median portions con- 
spicuous light yellow, the caudal third almost black ; lateral portions 
of the postnotum black with a conspicuous oval, light yellow mark 
just before the base of the halteres. Pleura with the lateral margins 
of the propleura brownish ; remainder of the pleura brownish-red 
with conspicuous light yellow marks as follows : On the dorsal half 
of the mesosternum, interrupted above the middle coxae ; on the 
mesepimeron and metaepisternum, and a more obscure l)lotch on the 
dorsal portions of the mesepimeron underneath the wing-root. Hal- 
teres l)rown, the tips of the knoljs a little brighter. Legs with the 
30xae and trochanters l)rownish-red ; anterior femora l)lack, the basal 
quarter Ijrighter, reddish-brown ; posterior femora yellowish-brown, 
broadly tipped with blackish ; tibiae V)rown, narrowly darkened at 
their tips ; tarsi brown. Wings with a strong yellowish tinge, the 
costal cell a little suffused ; stigma conspicuous, dark brown ; a Ijroad, 
light brown seam along the l)asal deflection of -5^ + - and the r-m 
cross-vein ; apex of the wing broadly suffused with brown. Venation 
(Plate XII, fig. 39), cell M^ short-petiolate. 
Abdominal segments brownish-yellow, the basal tergite black ; 
segments two and three with a broad, black, caudal margin that is 
continued l)ack up the sides of the segments for a short distance; 
segments six to eight largely black ; hypopygium 1)lack with the 
outer pleural appendage conspicuously brownish-yellow. Hypo- 
pygium (Plate XIV, fig. 67) with the ninth tergite large, the caudal 
margin with a prominent U-shaped notch, the lateral lobes shiny, 
smooth ; caudal margin blackened, medially with a deep, rounded 
incision and with abundant black spicules that are most numerous at 
the opening of the lesser incision, more sparse and scattered on the 
dorsal portions of the sclerite ; outer pleural appendage large, con- 
spicuous, the tip drawn out in a long point; ninth pleurite not 
complete, th(^ pleural suture rather long, curved dorsad at its cephalic 
end. 
The female is similar to the male, differing as follows : antennae 
shorter: l)lack bands on the abdomen Ijroadest on segments one to 
three, successively narrower on four and five, complete and very 
intense on six and seven ; segments eight and nine, including the 
ovipositor, yellowish ; lateral margins of the tergites black excepting 
the basal half of segment two ; sternites dull yellow except on segment 
seven, which is largely black. 
