t!4 Annals of the South African Museum. 



broad, red before and black beneath. Antennae dark reddish, but 

 iufuscate above at the base and on the basal half of the third joint ; 

 first joint three times as long as the second, Avith sparse and short 

 whitish hairs; third joint narrow, linear, a little longer than the first 

 two taken together. Proboscis entirely black, 7' 5 nun. long; palpi 

 reddish-yellow, thin, almost bare. Thorax black, with red humeral 

 calli ; it is entirely clothed with dirty-greyish hairs having a white 

 sheen if looked at from a front view ; bristles long and entirely 

 yellow, pleurae grey-dusted, the sternopleura with, a broad red band 

 above ; they are whitish-pilose below and on the breast ; sternopleura 

 with a dense tuft of long pale hairs. Scutellum red, narrowly black 

 at the base, clothed like the thorax with long whitish bristles at the 

 hind border. Squamae yellowish, with white fringe ; halteres yellow, 

 with white knob. Abdomen short oval, black, rather shining, broadly 

 red on the sides ; it is clothed like the thorax and has whitish bristles 

 at the hind border of the segments ; genitalia reddish above, black 

 lielow; venter red, each segment broadly black at the base, with 

 sparse greyish hairs. Legs yellow, with the tarsi blackened at end ; 

 the femora have a well-marked black stripe below from the base to 

 the end, and are provided with whitish hairs and strong yellow spines, 

 3-4 on the middle, 5-6 on the hind pair -. spicules of the tibiae much 

 developed, yellow ; claws black, with a red base ; pulvilli very short. 

 Wings very long and broad ; basal comb pale-yellowish, larger than 

 usual; alula Irroad, hyaline, pale-fringed. The wings have only the 

 apical third greyish-hyaline ; the rest has a yellowish-brown infuscatioii 

 which forms broad dark borders along the veins, the centre of the 

 cells being paler. Veins black, the first entirely and the others 

 yellow at the base ; upper branch of the cubital fork retreating at 

 base ; first posterior cell narrowed at end ; discal cross- vein set much 

 before the middle of the discoidal cell, which is very long, being three 

 times as long as broad, obtuse at the end and with parallel sides, 

 the second of the lower veins being three times as long as the -first ; 

 anal cell narrowed at end. 



\ 



DISCHISTUS VARIEGATUS, Macquart (1840). 



A species very distinct owing to the red proboscis, but closely allied 

 to the preceding one : it is perhaps its female. Macquart has described 

 the female from the Cape, and likewise there are in the collection 

 females from Namaqualaud, Springbok (Cape), October, 1890, and 

 from Bushmanland, Jackal's Water (Cape), October, 1911 (E. M. 

 Lightfoot). The present species show a very striking affinity with 



