Eiythroiinna. 245 



reddish-brown below. Thorax black abo\e, powdered 

 with blue below ; sides bluish, with two black stripes ; 

 projections at insertion of wings, and between them blue. 

 Legs black ; underside of femora and coxa:; yellowish- 

 brown. Wings hyaline. Ptcrostignia small, rhomboidal, 

 brown. Abdomen, segments I, 9, 10, and basal part of 

 2, powdered with blue, first with a small basal black spot ; 

 other segments dark steel-blue above, with a black 

 transverse mark across the segment near the distal end ; 

 sutures }'ellow ; brownish below. Anal a/ifici/dagcs, upper 

 prominent, black, somewhat triangular, flattened, diver- 

 gent at the end ; lower, rounded, brown, with a short 

 black projection above. 



Female Imago. 



Head, thorax, legs, and icings as in male, except that 

 the face is \-ellower and pterostigma lighter; there are two 

 interrupted }-ellowish lines on the front of thorax, and 

 there is a \-ellow spot on hind margin of prothorax, and 

 another on the front margin. Abdonicn, first segment 

 \ellow, with a squarish bronze-black dorsal spot 

 containing a tin}' \-ellow triangular one in centre ; rest 

 bronze-black above, with sutures }-ellow, except between 

 segments 7, 8, 9, and 10 where the}' are blue; below 

 }'ellow. Anal appendages short, conical, pointed, black. 

 Ovipositor slender, russet, sharp-pointed, reaching about 

 half-wa}- between segments 9 and 10. J'alvcs yellow. 



Immature Colouring". 



Marlangs yellow. Pterostigma very pale ; a bronze- 

 green tinge to the black of male as well as of female. 

 Eyes at first greenish-brown. 



