436 NEW AND RARE AUSTRALIAN AGRIONID^, 



Wings: neuration black; poif'nodals 12-13 iu fore, 10-11 

 ia hindwing ; pterostigma 1 mm., dark brown with upper 

 distal angle very acute; lower side covering only half a cel- 

 lule. Superior sector of triangle forming 5-6 cells before 

 reaching wing-margin. Head: eyts black above, yellowish- 

 greea beneath and iu front next clypeus. Epicranin,in and 

 ciypeus black, separated by a pale suture; labnini black 

 bordered with pale brown ; iabiuin paie airty whitish. Tho- 

 rax: prothorax black, with a brown dorsal stripe. Meso- 

 and metathorax black above ; a pair of short brown humeral 

 stripes, 2 mm. long, not reaching as far as the wing-bases; 

 a pair of narrower pale yellow lines arising just under fore- 

 wings, and running to a point just under the humeral 

 stiipes; on each side, below these, a broad band of the black 

 ground-colour; rest of side and underside pale yellowish. 

 More mature specimens show signs of becoming pruinescent- 

 grey. Legs short, black above, pale beneath. Abdomen 

 very slender, 1-2 and 8-10 slightly thickened. Colour dull 

 black; 1-2 with a fine pale yellow dorsal line, and low down 

 on each side a broad lateral band of the same colour, inter- 

 rupted by suture ; 3-7, a very narrow transverse basal band 

 of pale yellow, close up to suture; 8-10, black, powdered 

 with greyish bloom in the mature insect, sides with large 

 dull yellow marks or spots. Appendages: superior 0-8 

 mm., forcipate, thick, strongly clubbed, tips squarish; inner 

 margin hollowed out near middle, and carrying a set of small 

 spines on the curved margin near base ; in profile, these 

 appendages appear fairly straight and pointed ; colour black, 

 with short grey hairs. Inferior 0-2 mm., bluntly pointed; in 

 profile, subtriangular (Plate xlvi,, figs. 15, 16). 



9. Total lenglh, 37; abdomen, 30; hindwing, 22 mm. 

 Very similar to male, from which it differs as follows : abdo- 

 men thicker and more cylindrical, 8-10 much clubbed; sides 

 of 1-7 with a longitudinal dull yellowish band, interrupted 

 by a small black piece at apical end of each segment ; 8 with 

 yellow lateral spots, and some yellow on ovipositor ; 9, large 



