476 Annals of Hie South African Museum. 



The species was described from Central Africa, but seems to be 

 widely spread. In the present specimen the central hyaline spot of 

 the discoidal cell is rather broad, and the anal cell is narrowly hyaline 

 at end. 



EXOPEOSOPA, Macq. 

 EXOPROSOPA (EXOPROSOPA) ACRODISCOIDES, u. sp. 



A species of the seniculus group, near morosa and ignava, but 

 distinct from both on account of the more lightly coloured body and 

 wings, and of the quite whitish metapleural tuft. 



Type 9 from Nomtele (Ovambolaud), February, 1921, and a badly 

 preserved male from Mafa (Ovamboland), February, 1921 (K. H. 

 Barnard). 



c, ?. Length of body 12-15 mm.; of wing 13-16 mm; spread 

 31-37 mm. Occiput black, Avhitish tonientose at border of eyes. 

 Frons of the male only a little more broad than that of the female ; it 

 is black on distal half and red on anterior half above the antennae, 

 but more broadly in the female than in the male. The face is likewise 

 more broadly red in the female with a black median spot, while in the 

 male it is black with a red spot on each side. Frons with black hairs on 

 distal half and with yellowish tomeutum in front, like the face, which 

 has whitish hairs on the sides and is of conical shape ; mouth borders 

 pale yelloAvish. The basal joints of the antennae are reddish below 

 and black above, and are darker in the male ; third joint wanting in 

 case of types. Proboscis black, not projecting. Thorax black, clothed 

 with yellowish scaly tomentum on the back, and with tufts of whitish 

 hairs on the sides ; bristles black ; pleurae reddish, black spotted, 

 with whitish hairs even on the metapleurae. Scutellum reddish, with 

 a narrow black base, clothed, like the back of the mesonotum, with 

 black bristles at hind border. Squanme brown with whitish fringe ; 

 halteres yellowish. Abdomen black, with reddish sides and hind 

 border of segments, in the male almost red, with black spots at base 

 of each segment ; the hairs of sides are white near the base, yellowish 

 on the rest with a few black ones ; it is clothed above with yellowish 

 scales like those of the back of thorax, but at the base of the second 

 segment and, as it seems, on the second to third terminal segments, there 

 are transverse bands of whitish scales. Venter red, unspotted in the 

 male, with broad black bands in the female, both with whitish tomen- 

 tum. Spines of the ovipositor reddish. Legs black, but with a reddish- 

 yellow appearance on account of the dense vestiture of scales ; spines 

 and spicules black ; front tibiae long and smooth ; front tarsi shiny 



