BY R. J. TILLYARD. 429 



pale brown, rest of neuration dark brown to black; pterostigma 

 3 mm., dark brown; membranule, fore very small, white; hind 

 1*5 mm., very narrow, white. Nodal Indicator 1115-18 10-1 3i 

 Head: eyes dark brown, very contiguous; II 11-14 10-13). 

 occipital triangle very small, yellow; vertex very small, forming a 

 yellow crescent-shaped tubercle. Front hairy, dull yellowish- 

 brown above, upper edge marked with an indistinct dark brown 

 ray gradually merging into the ground-colour; face olive-green, 

 yellowish on sides; clypeus hairy, greenish-yellow; labrum dull 

 greenish-yellow, an indistinct narrow brown line in suture next 

 clypeus; labium, and gence dull yellowish, mouth edged with 

 dark brown. Thorax: prothorax very small, brown. Meso- 

 and melathorax rather short and thick, dark chocolate-brown 

 above, dorsal ridge yellow, elevated near its centre into a sharp 

 spine; on either side a beautiful slanting lemon-yellow antehumeral 

 ray, rather short, and tapering to a point outwards in front. 

 Sides of thorax greenish-yellow, more or less shaded with 

 brownish-olive. Wing-joins and notum pale brown, profusely 

 spotted with yellow. Legs very dark brown, underside of pro- 

 femora pale yellowish, tibia3 distinctly ciliated. Abdomen: 

 1 wide, 2 slightly narrowing, 3 not constricted, 3-10 almost 

 cylindrical, if anything 7-9 slightly wider than the rest, 2-7 with 

 supplementary transverse carina?. Colour : 1-2 dark brown, rest 

 black, marked with pale lemon-yellow (greenish-yellow in mature 

 specimens) as follows : — 1, base yellow, a short dorsal mark and 

 two small anal spots, sides also yellow — 2, a distinct longitudinal 

 dorsal ray, constricted in the middle by the supplementary 

 carina, which divides the segment slantingly; a pair of indistinct 

 central spots, very small, bordering the carina above and inclined 

 to the dorsal ray, a pair of small anal spots; sides yellow, sutures 

 with transverse brown rays, a brown line along the central 

 carina; spurs verysmail, angulated, lemon-yellow; genital appen- 

 dages not prominent — 3, a fine dorsal line slightly thickened 

 basally and broken by the carina; a pair of small central spots 

 just below the carina and very close together; a pair of larger 

 anal spots, wide apart; sides yellowish, except sutures and carina, 



