380 



Annals of the South African Museum. 



to about one-third length of the segment's length ; 8 very small spots 

 at ventral margin. Appendages blackish ; superior parallel in dorsal 

 view, narrow, gradually narrowed to end, obtuse ; in side view very 

 slightly curved downward ; inferior appendage of about equal length, 

 squarely cut at end. Genital organs on segment 2 similar to M. pti-ta 

 a transverse obtuse ridge ou anterior lamina densely fringed with black 

 hair ; hamuli broadly elliptical in outline, curved points turned hind- 

 ward and laterally, a transverse ridge conspicuously yellow, the hamule 

 otherwise blackish. Lobe larger than hamule, almost rectangular, 

 inclined to an angle of about 45. 



Wings hyaline ; costal vein black with a very narrow yellow line. 

 Pterostigma black. Minute brown spot at base of hind wings from C 

 to A. Membranule white in proximal, diffusely light grey in distal half. 



FIG. 65. Macromia thetis, <$ . Chirinda Forest. Terminal segments, 



right side view. 



Anq. 



16* 



11 



16 5.5 



Tl' Cu * 474' 



5 

 -- 



5 

 --; 



in front wing two rows of dis- 



coidal cells to level of bridge ; in right hind wing 3, in left one 2 cells 

 running from M to Citq. 



? . Similar to male. Sides of frons and postclypeus at the eye 

 more distinctly yellowish. Thorax as in male. Abdomen more robust, 

 very little dilated on segments 7-9 ; yellow markings generally slightly 

 more extended, except in second segment, where the transverse band 

 appears dissolved into four spots ; on segment 3 the narrow basal 

 ring is very nearly complete and the submedian dorsal spots extend 

 posteriorly beyond the transverse carina ; 4 submedian spots almost as 

 ou 3 and also minute spots behind the carina ; 5-6 very minute sub- 

 median spots. Appendages short, sharply pointed, black ; supra-anal 

 tubercle with a sharp dorsal keel. Genital segments as in Text-fig. 66, 

 a conspicuous light yellow spot on the otherwise obscure ninth ventral 

 plate. 



