﻿112 Ainiah of the Soiifh Afrlcun MtiseuDi. 



1 (2). Wino-s narrow and long-, with the iipix-r 1>ranc-h of the cubital fork 



angiilate at the l)ase and there provided with a recurrent veinlet ; 

 dlscoidal cells three times as long- as the second posterior cell and 

 very acute outwai'dly ; third anteunal joint in the shape of a very 

 long-, acute cone, linear ; jiraesutural niacrochaetae black ; hind femora 

 with many spines )>elow. (First group) . anttangvla, Loew. 



2 (1). Upper branch of cubital fork not ai^pendiciilated and discoidal cell not 



more than twice as long- as the second i^osterior cell ; third antennal 

 joint not linear. 



3 ( li). Third antennal joint broad at base and afterwards forming a very thin 



and long- styliform jjoint ; wings with a more or less extended pattern, 

 with a distinct Ijasal comb and with a rather long- discoidal cell; 

 praesiTtiiral bristles yellow ; hind femora with many spines below. 

 (Second group.) 



4 (9). Species of great size, with the wing- pattern extended to the hind 



border, aiid with clear stripes on the fuscous middle area ; anal cell 

 with narrow end. 



5 (6). Legs entirely yellow ; wings infuscated, with a whitish end, and a 



whitish, longitudinal middle stripe . longitudinalis, Loew. 



Legs entirely black, or with dark-yellowish tibiae or base of tarsi. 

 Wings with the fore basal half infuscated and the hind half clear 

 with broad fuscous borders of the veins ; body pubescence pale 

 yellowish; tibiae with yellow ground-coloiir . liturata,l,oew. 



"Wings yellow and brown on the disc, with a broad brown, praeapical 

 band and a brown hind border ; pubescence bright yellow or golden ; 

 tibiae black ..... pictipennis, Wied. 



Wing pattern limited to the fore bc>rder, not extending in the middle 

 over the fourth longitudinal vein ; if the hind border is infuscated, 

 there are no clear stripes in the middle ; anal cell less narrowed at 

 end ; species of medium size. 



10 (11). First basal cell infuscated at the base only and first submarginal cell 



entirely hyaline in the male; antennal tuft with black hairs on the 

 inside ... ... sim2)lex, Wied. 



11 (10). First basal cell entirely dai-kened as far as the discal cross-vein in 



both sexes and first sixbmarginal cell darkened at base. 



12 (13). First posterior cell not nai-rowed at end; wings with the hind half 



rather infuscated ..... infuscata, sp. nov. 



13 (12). First postei-ior cell much narrowed at end ; wings with the hind half 



quite hyaline ..... conocephala, Macq. 



14 (3). Third antennal joint in the shape of a short cone; wings entirely 



hyaline, without basal comb ; thorax with black praesutural bristles 

 and provided Avith a distinct collar of black bristly hairs in front ; 

 hind femora with a few bristles below ; smaller species, of a deep 

 black colovir, with silvery hairs on abdomen. (Third group.) 



15 (lt>). Tibiae yellow ; pubescence on pleurae and abdomen of a yellowish 



colour ... . . latiuscula , Loew. 



IG (15). Tibiae black; pleurae and abdomen with white pubescence. 



tenera, Loew. 



