424 Annals of the South African Museum. 



4. Pterostigma broad, bicolorous, black or very dark brown with anal margin 



light ochreous . . .5. 



Petrostigma not distinctly widened, unicolorous, light ochreous to light 

 ferruginous between dark veins. Face and frons whitish yellow ; variable 

 dark line at base of frons, sharply defined and black, or only faintly 

 indicated. Thorax light golden or greyish brown dorsally, in very 

 mature specimens sometimes slightly pruinose ; more yellowish at the 

 sides, with the usual dark bands, more or less confluent longitudinally ; 

 this pattern distinct and blackish in immature specimens, gradually 

 fading to greyish shades and often indistinct in very mature and 

 pruinose ones. Legs blackish brown, first and partially second femora 

 ochreous brown. Abdomen comparatively robust, almost cylindrical ; 

 light ochreous brown ; sides of segments 1-3 yellowish with blackish 

 lateral band ; narrow black lines at mid-dorsal, lateral and transverse 

 carinae ; broader black mid-dorsal band on segments 8-9. Wings, 

 venation light reddish yellow to the same extent as the red colour in 

 male (dark to almost blackish in immature specimens) ; yellow basal 

 spot similar to corresponding male, but generally paler in colour. 9$ to 

 10.V Anq. AM. 22, lidiv. 28, pt. 3 mm. to 24, 30, 3 . . T. annulata. 



5. Wings with venation wholly black, except some whitish cross- veins in sub- 



costal and adjacent species ; in some specimens a small golden yellow 

 basal spot in hind wing, at most to Anq\, Ctiq ] and one or two cells at 

 membranule ; not rarely a light yellow cloud in nodal region; ptero- 

 stigma deep black with light ochreous line at anal margin; Anq 10 to 

 11 L Face greenish yellow, frons dull orange with broad shining black 

 basal line. Thoracic dorsum dull yellowish ; broad cuneiform, dorsally 

 pointed blackish band on median suture ; ventrally narrow, dorsally 

 rather broad blackish band in front of humeral suture. Sides greenish 

 yellow with the usual lines broad, blackish and conspicuously confluent 

 in longitudinal direction. Abdomen comparatively robust, very gradu- 

 ally narrowed to end ; light ochreous brown : black lines on mid-dorsal 

 and lateral carinae broad, especially on posterior segments, confluent at 

 terminal joints of segments 7-8 ; segment 9 black with ochreous antero- 

 lateral spot ; 10 wholly black. Abd. 24, hdv.'. 31 , pt. 3 < to 27, 33, 35 mm. 



T. Distanti. 



Wings with venation yellowish red to nodal region, blackish more 

 distally ; large golden-yellow spot on base, to Anq l and Cuq or slightly 

 more in front wing ; to Anq, basal side of t and anal angle in hind 

 wing; pterostigma very dark ferruginous with light ferruginous narrow 

 line at anal margin. Thoracic pattern similar to preceding species, but 

 colours more like T. aimulata, and the lateral bands reduced in size and 

 much paler in colour, only the stigmatic line and parts of the sutural lines 

 being black. Abdomen very much like preceding species in outline and 

 elements of pattern ; mid-dorsal black line a little narrower ; lateral 

 black band more reduced, especially on segments 4-6. Abd. 24, hdw. 30, 

 pt. 3 mm T. pluvialis. 



6. Frons above metallic greenish blue, olivaceous anteriorly. Face light 



yellow ; labrum yellow with median black line. Thoracic dorsum black 

 Avith cuneiform light yellow antehumeral stripes and similar spots on 



