378 Annals of the South African Museum. 



ring and sub-median dorsal bilobate spot confluent at the sides, 

 the black colour thus forming a rhomboid mid-dorsal spot within 

 yellow ground ; 7 basal yellow ring to nearly one-half the segment's 

 length ; 8 narrow transverse lines near anterior end not quite reaching 

 to lateral nor to mid-dorsal line and a very narrow line at posterior 

 margin to two-thirds of the segment's height ; similar terminal narrow 

 line on segment 9 ; 10 ferruginous, gradually turning to yellowish in 

 posterior half. 



Superior appendages light ochreous, rather widely distant, parallel ; 

 inferior appendage very little shorter, broadly cut at end, ochreous, 

 bordered with fuscous. Genital organs of segment 2 : anterior lamina 

 small, not elevated ; behind this, two obtuse vertically projecting lobes 

 (anterior hamuli) ; these lobes and the lamina clothed with long 

 ferruginous hair. Hamuli strong, roughly rhomboid in outline, with 

 their fine point curved outwards, an obtuse ridge running from the 

 dorsal posterior to the ventral anterior angle ; black, the fine point 

 yellowish. Lobe projecting very nearly as much as the hamule, 

 nearly rectangular in outline, with rounded edge. 



Wings hyaline, slightly tinged with greyish yellow in highly 

 mature specimens. Pterostigma light ferruginous. Costal vein 

 rather broadly lined with yellow. Membranule whitish to greyish. 

 A single row of cells in beginning of discoidal field in both front and 

 hind wings ; between Cu\ and Cu. 2 in hind-wing but once, at base, two 

 cells, otherwise a single row. Reticulation (Plate X, fig. 1) less 

 variable than in female. 



9 . Slightly more robust than male, but very similar in shape and 

 colour ; the terminal abdominal segments chiefly dilated in lateral, 

 much less in dorsoveutral dimensions. Yellow markings of abdomen 

 slightly more extended than in male, the pupillate pattern approxi- 

 mately developed also on segment 3. Appendages short. Genital 

 segments much as figured for the following species, but the very 

 small valvular scale more deeply excised. 



Wings light golden yellow from slightly beyond the nodus to near 

 the tip, and with the base golden yellow to first autenodal and first 

 cubito-anal cross-veins (yellow colour least of all our specimens in the 

 one figured Plate X, fig. 1). Neuration much more dense and much 

 more variable than in male. The specimen figured is nearest to the 

 male of all those examined. Others show evident transition to con- 

 ditions of following species, mostly so the specimen from Hilton Road : 

 fully two rows of discoidal cells in both front wings and right hind 

 wing, one cell but twice in left hind wing ; fully two rows between 

 Cu-^ and Cu* in right hind wing, two rows twice interrupted by single 



