PyrrJiosoma. 263 



reddish. Lci^s dull red. Win^^s h}'aline. Ptcrostigma 

 reddish. Abdomen slender, crimson, unspotted. Anal 

 appendages, upper small, rounded, black ; lower short, 

 conical, pointing upwards, red, with black tip. 



Female Imago. 



Face yellow, base of labium and of nasus black. 

 Dorsal surface of tJiorax usuall>- with two very fine 

 yellow, longitudinal lines. Abdomen, seginent i crimson, 

 with bronze spot ; 2, crimson ; 3, crimson, with a pos- 

 terior bronze spot ; the rest bronze, but 8, 9, and 10 

 have some crimson colouring on the dorsal surface ; 

 sutures }-ellowish ; ventral surface brownish. Anal 

 appendages very small, conical, reddish. Ovipositor 

 reaching to end of tenth segment, red. Valves rather 

 broad, dull yellow, as long as ovipositor. 



Immature Colouring. 



Pterostignia pale. In the female the crimson, especially 

 at the distal extremity of the abdomen, is replaced by a 

 reddish orange tint ; but in both sexes the abdomen 

 earl}' assumes its crimson colour. 



Variation. 



Varietal forms seem to be confined to the female. 

 De Selys describes a specimen of this sex, which closely 

 resembled a male : the abdomen had no spots, but the 

 extremity of the segments was ver\' fineh' circled with 

 bronze ; the face also resembled that of a male. Me 

 mentions another ver_\' like the last, but having a touch 

 of bronze at the extremit}' of segments 6, 7, and 8, the 

 face being as in the t}'pe. In 1898, I took in the New 



