from the Transvaal and Nyasaland. 231 



the rhinarium and lower part of the mentum black or blackish; 

 sides of thorax more or less varied beneath with black or 

 greenish and rufo-testaceous ; head and thorax thickly clothed 

 with hair ; abdomen with a rufo-testaceous band on the lower 

 part of the sides of the first two or three segments. Wings 

 hyaline, slightly iridescent, and slightly clouded on the outer 

 half. Fore wings with 8 or 9 antenodal cross-neiwules, the 

 first discontinuous, and 9 or 10 upper postnodal nervules 

 before the pterostigma, of which the first is somewhat oblique ; 

 in the lower space there are 7 or 8 before the pterostigma, 

 rarely coinciding with those above. Pterostigma rather 

 short, covering more than one cell, usually extending be- 

 yond the ends of two cross-nervules in the lower postnodal 

 space beneath it. Triangle usually at least twice as long as 

 broad, crossed by two nervures (rarely one), and followed by 

 a row of 3, 4, or 5 cells, and then usually by 3, not increasing 

 till beyond the middle of the wing. One supratriangular 

 nervule. Subtriangular space consisting of from 3 to 5 cells. 

 Pterostigma dark brown, between black nervures ; fore 

 wings very slightly marked with smoky at the extreme base. 

 Hind wings deep violet-purple at the base to beyond the 

 penultimate cross-nervule before the nodus ; the outer edge of 

 this patch is irregular, but offers two prominent projections ; 

 there is a more or less conspicuous yellowish subhyaline line 

 just below the costa in the purple patch, and an irregular 

 yellowish-hyaline isosceles triangle lying over the arculus, 

 with its base directed towards the base of the wing. Anal 

 appendages rather slender, more than twice as long as the 

 last segment of the abdomen, and upcurved at the tip. 



Female similar to the male, but the vertex is metallic 

 green instead of violet-purple, and the face below is almost 

 wholly yellowish tawny. The thorax is metallic green above, 

 bordered on the sides and behind with rufo-testaceous ; the 

 thorax beneath rufo-testaceous, with metallic green markings 

 below the wings. The lower part of the abdomen is broadly 

 rufo-testaceous beneath, over 3^ segments from the base. 



Four specimens from Fort Johnston, Nyasaland (P. Ren- 

 dall), and one from Pretoria (Distant). 



The British Museum possesses specimens apparently be- 

 longing to this species from Gambia, Angola, Natal, and 

 Madagascar. 



The specimens from Fort Johnston are to be considered 

 typical. 



This species is evidently closely allied to R. separata, 

 De Selys, from Algeria ; but whereas the face below the 

 vertex is almost entirely yellow in R. ducalis, R. separata is 



17* 



