BY R. J. TILLYARD. 733 



Wings: Xeuration black. Pterostigma 3*5 mm., narrow, 

 black, covering 3-4 cellules. Membramile, fore small, hind 

 about 2 mm., dirty whitish in young specimens, grey-brown or 

 fuscous in the mature insect. Nodal Indicator 15-19 14-17 

 Head: Occipit^ carrying a small horn or tubercle, 11-15 14-17 

 yellow. Vertex hairy, small, tubercled, black. Anteniu^ black, 

 basal joint thickened. Front slightly hairy, black above, carry- 

 ing two round yellow spots ; lower part of front pale dirty 

 brownish, shading to yellow next the eyes; a black transverse 

 line in the suture bordering the postclypeus. Postclypeus dirty 

 brown, black next anteclypeus; anteclypeus jet black, with a 

 small brownish line next labrum, the middle of the line enlarged 

 upwards into a sharp point. Labrum black with a pair of round 

 brownish spots close together; gence blackish with a round yellow 

 spot; labium dull blackish, shading to brownish on mandibles 

 and underneath. Thorax: Prothorax very small, black. Meso- 

 and metathorax hairy, black, marked with pale dirty yellowish- 

 brown spots as follows : — on each side of the dorsal ridge two 

 small round antehumeral spots, also the interalar ridge is marked 

 on each side by ill-defined elongated marks of olive-brown. On 

 either side, a lateral row of 5 or 6 small irregular spots, and 

 below these again two small spots, one on each side of the meta- 

 spiracle; also a row of three small spots low down on the meta- 

 thorax near the abdomen. Underside black with grey hairs. 

 Notum black, a small yellowish spot on mesoscutellum; meta- 

 notum with grey hairs. Legs black, a brown spot at bases of 

 tibiae. Abdomen slender, 1-2 enlarged, 3 rather pinched. 

 Colour black, marked with pale dirty brownish spots as follows : 

 1, all black, with grey hairs; 2, black, with some grey hairs on 

 the dorsum, which carries either a conspicuous longitudinal mark 

 or a fine line 2 mm. long; a pair of small basal spots; a pair of 

 small central spots, very pointed and slanting, and a similar pair 

 of anal spots : on each side an irregular elongated maik, skirting 

 the top of the spur, the rest of which is black; also a smaller 

 irregular anal spot; under the spur an elongated spot, followed 

 by a smaller anal spot on the genital shield: 3-7, a pale elongated 



