BY R. J. TILLYARD. 183 



band is not enlarged where it meets the eyes. Eyes black above, 

 paler underneath. Glypeus and labrum jet black. Labium and 

 mandibles pale dirty brownish. 



Thorax. — Prothorax black. Meso- and metathorax black 

 above, on either side a short narrow bright green humeral ray 

 and two irregular greenish lateral bands separated by a band of 

 black. Underside pale dirty brown. Legs dull black; coxse and 

 underside of metafemora pale dirty brown. 



Abdomen excessively slender, cylindrical, 1-2 and 8-10 

 very slightty enlarged. Colour : jet black, marked as follows : — 

 1, a dull greenish spot on each side; 2, a dull greenish line on 

 each side of the genital appendages; 3, a basal dorsal spot, very 

 small, pea-green, in shape like an inverted trefoil; 4-7, a basal 

 dorsal pea-green spot cleft by the intrusion of the black dorsal 

 ridge; in 5 this spot is about one-third the length of the segment, 

 in 4, 6, 7 it is much smaller; 8, basal half bright green, cleft like 

 the spot in 5, but more widely, the green extending downwards 

 on to the sides of the segment; 9-10 black. Underside dull 

 black. The size and colour of these abdominal markings vary 

 greatly in different specimens. 



Appendages. — Superior very short, black, subconical, 

 separated, pointed downwards. Inferior consisting of a pair of 

 minute black hooks, recurved upwards, close together. (See 

 Plate xvii,, fig. Xa). 



2- Very similar to $. Abdomen thicker and more cylindrical; 

 no spot on 8; 10 carries two small hooks below. Colour of 

 epicranial and thoracic bands pale brownish. Wings hyaline. 

 Appendages very small, black. (See Plate xvii., fig.46). 



The colouring of the markings in the £ varies much in different 

 specimens, being sometimes a delicate cream colour, sometimes 

 pale yellow, rarely bluish, but most commonly a delicate pea- 

 green. Specimens also occur in which the rich yellow colouring 

 of the wings is not complete, and sometimes entirely absent. 

 The colouring possibly varies with the age of the insect. 



H a b . — Kuranda and Cairns districts, N.Q. December- 

 January. Local. 



