84 Annals of the South African Museum. 



with short and pale pubescence. Thorax and scutellum shining black, 

 but the humeri more narrowly so, the postalar cell broadly and the 

 posterior border of sternopleura with part of the pteropleurae, 

 reddish brown ; they are entirely clothed with black, long hairs ; the 

 hairs below the notopleural line at the upper border of meso- and 

 pteropleura are longer, denser, and tuft-like. Squaniulae dirty 

 whitish, with a dark border and a pale fringe ; halteres dark yellowish, 

 with white knob. Abdomen entirely shiny black, even on the venter ; 

 its long hairs are entirely black, like the long and thin bristles. Legs 

 entirely black and black-haired, but the tibiae somewhat reddish- 

 brown and the knees narrowly yellowish. Wings with all the veins pale 

 yellowish and with the membrane whitish-hyaline, with a faint 

 yellowish tinge, chiefly at base and along the fore border ; at hind 

 border they are more iridescent. 



HYPEEUSIA, Bezzi. 



This genus was founded by me for a robust species of propor- 

 tionally greater size, from Natal, in the British Museum. The species 

 here described as new is much smaller than the type-species, but agrees 

 with it in the low position of the antennae and in the venation, 

 although the anal cell is open. 



HYPERUSIA MINOR, sp. nov. 



A small, but robust, black species, resembling the female of the 

 European Usia versicolor, and very distinct on account of its yellow 

 antennae. 



Type <$ ; a single specimen from Zululand (M'Fongosi), April, 

 1916 (W. E. Jones). 



c. Length of the body 4 mm.; of the wing 3 - 5 mm. Head 

 entirely shiny black, clothed at vertex, on frons and at sides of face with 

 rather abundant greyish or pale hairs. The frons is not at all promi- 

 nent ; it is flat, or even concave on the fore half, and is very broad, 

 broadening even more forwards, being at level of antennae nearly as 

 broad as long. The face is very short, and is distinctly reddish- 

 yellow on sides of the middle ; the mouth border is prominent, and 

 there is a furrow between the face and the cheeks and jaws. The 

 antennae are insei'ted very near the mouth border, the mouth- 

 opening being much produced above ; but in profile they are always 

 placed near the middle of the eyes ; the two basal joints are short and 

 black, but the first is about twice as long as the very short second 

 joint, and is clothed on the under side with rather long, whitish hairs ; 



