BACCHA. 
not so elongated, and never longer than 
the wings. 
5 (16) Face yellow or reddish; scutellum and 
thorax very often yellow or yellow- 
spotted. 
4 (15) Wings strongly dilated and with extended 
brown or yellow pattern; antenne yel- 
low; face without black middle stripe; 
third vein sinuous ; third antennal joint 
very short ovate. 
5 (12) Seutellum and pleurse wholly yellow. 
6 (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 ; ocellar 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 .............. 
9 (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 browarmpatelives Get 292.25 P02, 
10 (7) Wings with hyaline alula and yellowish 
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: blaclwstripeswatiis ak, 0 FA 
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.......... 
12 (5) Scutellum entirely black or at the most 
with a yellow border; pleure black, at 
most with a yellowish spot. 
13 (14) Seutellum black, yellow-bordered ; pleurze 
with a yellowish spot %.é..s.0% 2.50004 
14 (13) Scutellum and pleure wholly black ; wings 
blackish, with a broad hyaline preapical 
band, a blackish apical spot, a hyaline 
middle streak and hyaline axillary cell 
anG HeSe Gh AMA Ce on once = wip «pegs se, 
15 (4) Wings not dilated and entirely greyish 
hyaline ; antenne wholly black; face 
with a black middle stripe; third vein 
30 
picta, Wied. 
var. superpicta, 
avin ST 
helva, sp. n. 
grahami, sp. n. 
euryptera, Bezzi.* 
neave?, sp. 0. 

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