170 Auriah of the South African Museum. 
light grey, the front more yellowish ; tubercle on the vertex low with 
a shallow median groove and a broad V-shaped notch in front. 
Thoracic dorsum blackish with a yellowish-brown bloom ; two dorso- 
median dark brown lines on the praescutum ; scutum clear grey, the 
lobes more brownish laterally ; postnotum clear light grey with an 
indistinct blackish median line. Pleura light grey. Halteres elon- 
gate, dull yellow, the knobs brownish. Legs with the coxae dull 
yellow with a sparse whitish bloom ; trochanters yellow with a 
blackish mark on the lower side ; femora light lirown, a little darkened 
at the tips ; tibiae and tarsi brown. Wings In-ownish-grey, the costal 
cell a little more suffused; stigma distinct, ])ut ill-defined, dark brown; 
a vitreous band along the cord and crossing cell \st Mr, ; veins dark 
brown, the veins in the path of the vitreous band and the tips of B^ 
and jBo pale. Venation (Plate XII, fig. 32), Bs weak, rather short : 
second anal short. 
Abdominal tergites grey, the sternites more reddish-grey. Male 
hypopygium (Plate XIII, fig. 50) with the ninth tergite (Plate XIV, 
fig. 61 j subquadrate, the caudal margin with a very deep median 
re-entrant angle ; caudal margin densely beset with powerful black 
bristles ; margin of the U-shaped notch pale, the inner ventral angle 
of each of the lateral lolies produced l)eneath into a blunt loljule that 
is armed at the tip on the outer face with three stout black teeth and 
several powerful bristles. Ninth pleurite small, triangular, bearing 
at its outer ventral angle the pleural appendages ; pleural appendages 
consisting of a rounded knob that is densely beset with pov^erful 
short spines and numerous bristles ; a flattened lobe lying distad of this 
knob, whose margin is armed with a crown of six or seven stout spines 
that are subequal in size and equidistantly spaced ; a stout hair on 
the underside near the tip. Ninth sternite very extensive, profoundly 
incised on the mid-ventral line, each division powerful, bearing at 
the .apex a small pale triangular lolie that seems to lie the ninth 
pleurite. 
In a paratype the fifth flagellar segment is a little larger than 
those which follow, and apparently belongs to the same series, with 
the four liasal flagellar segments ; the frontal prolongation of the 
head not so pale dorsally. In the two para types from the Winterhoek 
Mountains the size is very small, the smallest measurements given. 
Habitat. — South Africa. 
Holotype, ^ , South-west District, Cape Colony. 
Paratopotype, ^ ; paratypes,2 c^ c^ , Winterhoek Mountains, Tulbagh, 
Cape Colony, altitude 3600 ft., April, 1916 (R. M. Lightfoot). 
Type in the South African Museum. 
