234 Mr. W. F. Kirby on Dragonflies 



A widely- distributed African species. The Museum pos- 

 sesses specimens from the Gold Coast, Gaboon, and Natal. 



15. Urothemts RendalU, 



Long. Corp. 37 milllm. ; exp. al. 74 millim. ; long. pter. 

 4 millim. 



Female. — Yellow, darkest on the sides and lower surface of 

 the abdomen. Head with the vertex and frontal tubercle 

 orange-yellow, separated by a black band in the depression 

 between, which passes over the ocelli ; the occipital triangle 

 and the hinder orbits, which are marked on each side with 

 two black spots, are likewise orange-yellow, but the occiput 

 itself is black. The lower part of the face is paler yellow, 

 the mentum, except a narrow black median line, being almost 

 white ; the rhinarium is a little darker than the surrounding 

 parts. On the thorax is a black band in front of each 

 wing, and a narrower one behind, connecting the hinder part 

 of their bases ; and the hinder sutures on the pleura are also 

 marked with black. On the abdomen is a black band down 

 the middle, very broad on the first segment, less so at the 

 base of the second, and expanding at the extremity of each of 

 the following ones; beneath, there is a black band, inter- 

 ru])ted in the middle, at the extremity of most of the segments. 

 Legs yellow beneath nearly to the tips of the femora, other- 

 wise black. Wings iridescent hyaline, slightly clouded 

 towards the tips, costal nervures and the adjacent cross- 

 nervules mostly yellow, but the principal radius conspicuously 

 black as far as the nodus. Fore wings slightly tinged with 

 yellow at the base and with six antenodal and postnodal cross- 

 nervules. Hind wings deeply tinged with yellow at the base 

 as far as the triangle, and over tliis space the nervures are 

 pale yellowish white ; lower costal cell filled w^ith blackish 

 nearly to the extremity ; below this is a roughly oblong 

 blackish space, divided into spots by the pale yellow nervures ; 

 and towards the lower extremity of the yellow tinge, which 

 extends along the inner margin, but ceases before reaching 

 the anal angle, is a more or less regular, slightly curved row 

 of blackish spots, separated by the pale nervures. Mem- 

 branule white. 

 One specimen. 



Fort Johnston, Nyasaland (P. Eendall). 

 A very distinct species ; perhaps allied to the Algerian 

 l\ Echcardsu, Selys, which is not before me. 



