BY R. J. TILLYARD. 487 



the underside, below the black patch, is a transverse black ray- 

 separating off a triangular yellow space above and a yellow band 

 below it. Seidell a bright yellow. Legs black; coxse dirty brown, 

 two thirds of underside of fore femora bright yellow. 



Abdomen slender, 1-3 swollen, 4-10 narrow. Colour: 1-2 

 reddish marked by transverse rays of black which coalesce some- 

 what above so as to make the dorsal surface of 1 nearly all black; 

 suture between 2 and 3 lined by a black band; 3-7 bright red (in 

 some specimens testaceous); a very fine transverse black line one- 

 third of the way from the base of 3; at the end of each segment 

 an irregular broad transverse black band spreading out under- 

 neath so that the underside is almost entirely black; 8-10 deep 

 jet black; 9-10 enlarged, slightly clubbed. 



Appendages: Superior 1 '5 mm., black; narrow sublanceo- 

 late, slightly curved, pointed; apart at bases. Inferior almost as 

 long as superior, triangular, black. A few pale hairs on all the 

 appendages (Plate xliv., figs. 4-5). 



Q. Generally slightly longer than male, and differing from it as 

 follows : — Bases of wings more saffroned, generally for a space of 

 6-7 mm. Thorax generally somewhat paler than in male and 

 more conspicuously marked; scutella pale yellow. Abdomen with 

 the red colouring replaced by orange or fulvous; segment 2 pale 

 yellow. Appendages short, 1 mm.; parallel, pointed, subcylin- 

 drical, black; well separated by the rounded hairy projection of 

 segment 10. Seen sideways 8-9 appear somewhat wider than the 

 other segments, and 9 projects underneath into a small black 

 spine with a few fine hairs projecting from it. 



Hob. — Cairns, N.Q.(E.Allen); February- April; local. 



This beautiful insect has the same general shape and appear- 

 ance as Lathrecista festa, a species which also occurs, though 

 rarely, at Cairns. It is, however, far more brilliantly coloured 

 than L. festa, and considerably smaller. 



9. Tetrathemis flavescens Kirby. 



Kirby has described the male of this rare insect, from Borneo. 

 The female has never been described. In January, 1 905, 1 took one 



