170 Annals 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 ; postuotum 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 In-own, a little darkened 

 at the tips ; tibiae and tarsi brown. Wings brownish-grey, the costal 

 cell a little more suffused; stigma distinct, but ill-defined, dark brown; 

 a vitreous band along the cord and crossing cell 1st M.-, ; veins dark 

 brown, the veins in the path of the vitreous baud and the tips of E l 

 and K. pale. Venation (Plate XII, fig. 32), R 8 weak, rather short ; 

 second anal short. 



Abdominal tergites --rev, the sternites more reddish-grey. Male 

 hypopygmm (Plate XIII, fig. 5:)) with the ninth tergite (Plate XIV, 

 fig. 61; 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 lobes produced beneath into a bluut lobule 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 powerful 

 short spines and numerous hristles ; a flattened lobe lying distad of this 

 knob, whose margin is armed with a crown of six or seven stout spines 

 that are sube jual 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 lobe that seems to be 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 basal flagellar segments ; the frontal prolongation of the 

 head not so pale dorsally. In the two paratypes from the Winterhoek 

 Mountains the size is very small, the smallest measurements given. 

 Habitaf. South Africa. 



Holotype, ^ , South-west District, Cape Colony. 

 Paratopotype, ^; paratypes, 2 , Winterhoek Mountains, Tulbagh, 

 Cape Colony, altitude 3600 ft., April, 1916 (E. M. Lightfoot). 

 Type in the South African Museum. 



