406 Annals of the South African Museum. 



respectively. Legs black. Abdomen slender, slightly fusiform, 

 pruinose blue. Immature specimens with pattern of female. Wings 

 hyaline ; a costal stripe, distally to pterostigma, yellowish, mostly 

 deeper in colour between nodus and pterostigma ; in sub-costal space 

 of front wings a deep black stripe of variable length (4 to 8 cells, 

 very rarely reduced to a vestige), exceptionally a similar but smaller 

 stripe in space between MI-S and M 4 . Pterostigma large, sharply 

 divided in a proximal white and a distal black part, the latter slightly 

 the longer. 



9 . Frons fuscous with median transverse whitish-yellow band. 

 Thoracic dorsum dark brown with somewhat diffuse yellowish lines ; 

 broad at median, narrow at humeral suture. Sides light greenish 

 yellow with narrow, interrupted blackish lines between humeral 

 suture and metastigma, at metastigma and at second lateral suture. 

 Abdomen ochreous with three longitudinal black bauds : median one 

 beginning as a narrow line, gradually widened to end ; lateral ones of 

 equal breadth throughout, touching lateral margins of segments from 

 segment 5 backward. Vulvar scale erect, elliptical in outline, about 

 half as long as ninth segment. Wings mostly diffusely yellowish 

 besides yellow costal stripe ; no sub-costal black stripe ; tips of all 

 wings deep brown in variable length, mostly to about middle of 

 pterostigma. 



(, Abel 21, Jidw. 23, j.t. < 3 mm. to 25, 30, 4. 9, 21, 24, 3 to 

 24, 29, < 4. 



Very widely distributed in tropical Africa (North to Bahr el Ghazal) 

 and often common ; evidently a very common species at Delagoa Bay. 



POEPAX (Karsch, 1896). 



Similar in outline to Chalcostephia, but abdomen much narrower, 

 especially in male. Only genus of present fauna with ai-culus at 

 second Anq or distal thereto combined with incomplete last Anq. 

 Most specimens Avith 2 Cnq in hind wing. Superficially resembling 

 also Diplacodes, but wings more elongate and venation more close, 

 besides differences in many venational details. The affinities are 

 evidently with Clialcostephia, Hemistujma and Thermochoria. Only 

 one species known. 



PORPAX ASPERIPES (Karsch, 1896). 



Brit,. Mus. : 1 9 , Mashonaland, up Buzi River, Grazaland (25 . ix . 

 1905, G. A. K. Marshall). 



This single specimen is not in very good condition ; somewhat 



