BACCIIA. 30 



not so elongated, and never longer than 

 the wings. 



3 (16) Face yellow or reddish ; scutellum and 



thorax very often yellow or yellow- 

 spotted. 



4 (15) Wiugs strongly dilated and with extended 



brown or yellow pattern ; antennae yel- 

 low ; face without black middle stripe; 

 third vein sinuous; third antennal joint 

 very short ovate. 



o (12) Scutellum and pleurae wholly yellow. 



C> (11) Wings entirely blackish brown, with a 

 middle yellowish streak and a preapical 

 hyaline band. 



7 (10) Wings with the axillary cell and alula 



blackish brown, like the rest ; supra- 

 antennal tubercle very prominent and 

 violet -coloured ; oceflar tubercle also 

 prominent; thorax of female yellow with 

 three or five black longitudinal stripes. 



8 (9) Wings with only the central yellow streak 



and with the preapical hyaline band very 

 broad, extended to the hind border ; 



thorax of the male black picta, Wied. 



(8) Wings with an additional yellow streak 

 in the base of the anal cell; preapical 

 hyaline band narrowed below and not 

 reaching the hind border, the apical 

 brown spot being in contact with the 

 discal brown patch var. sttperpictn, 



10 (7) Wings with hyaline alula and yellowish [var. n. 



hyaline axillary cell and base of anal cell ; 

 supra-antennal tubercle less prominent 

 and yellow, black behind ; ocellar tubercle 

 not at all prominent ; thorax of female 

 without black stripes helva, sp. n. 



11 (6) Wings with the basal half yellow, a broad 



blackish middle band and a smaller apical 

 one, this last preceded by a complete 

 hyaline band ; thorax of female with only 

 two longitudinal black stripes grahami, sp. n. 



12 (5) Scutellum entirely black or at the most 



with a yellow border ; pleurae black, at 

 most with a yellowish spot. 



13 (14) Scutellum black, yellow-bordered ; pleurae 



with a yellowish spot euryptera, Bezzi.* 



14 (13) Scutellum and pleurae wholly black ; wings 



blackish, with a broad hyaline preapic.-al 

 band, a blackish apical spot, a hyaline 

 middle streak and hyaline axillary cell 

 and base of anal cell : ........ netted, sp. n. 



15 (4) Wings not dilated and entirely greyish 



hyaline ; antennae wholly black ; face 

 with a black middle stripe ; third vein 



* Not in the collection ; it was described from the Congo. 



