22, (11). 
23 (26). 
24 (25). 
25 (24). 
26 (23). 
27 (38). 
28 (37). 
29 (30). 
30 (29). 
31 (32). 
32 (31). 
33 (34). 
34 (33). 
35 (36). 
36 (35). 
37 (28). 
38 (27). 
Bombyliidae (Diptera) from Central Africa. 637 
Wings not so coloured. 
Wings mostly black, with hyaline apex; discal cell almost 
all black; no isolated brown spots; some pellucid spots 
on the cross-veins. 
Wings black also at the base and along the whole fore 
border; yellowish spots on the cross-veins very small ; 
third posterior cell shorter than the fourth; head, abdo- 
men, antennae and legs black . _jacchoides, sp. n., p. 644. 
Wings yellow at base and in the middle of the fore border; 
yellow spots on the cross-veins very broad, therefore the 
wing-pattern showing two black bands fused together on 
the hind margin; third posterior cell as long as the 
fourth ; head, abdomen, antennae and legs red 
laeta, Loew, p. 645. 
Wings mostly or wholly hyaline ; if the fore border is dark, 
the posterior edge of the marking is not sharply defined ; 
the discal cell is always hyaline; there are sometimes 
isolated brown spots on the cross-veins. 
Wings with the fore border narrowly darkened along the 
costa, but not sharply defined ; cross-veins for the most 
part infuscated. 
Abdomen of conical shape ; face strongly conical and pro- 
jecting ; some cross-veins infuscated. 
Thorax with a distinct white stripe on the sides ; abdomen 
with white scales; all the cross-veins margined with 
fuscous. ‘ punctulata, Macq., p. 645. 
Thorax without eel white stripe on the dorsum; the 
second cross-vein not margined with fuscous. 
Legs and antennae entirely black . major, Ric., p. 646. 
Legs and antennae partly red. 
Basal joints of the antennae red ; frons almost without black 
hairs; very large species, without black bands on the 
abdomen . ; . 5 batrachoides, sp. n., p. 646. 
Basal joints of the antennae black. 
Femora entirely red ; hairs of the body grey, without black 
hairs on thorax ; wings hyaline . stannusi, sp. n., p. 647. 
Femora with a plac stripe ; hairs of thorax of a golden 
colour, mesopleurae with black hairs ; halteres and wings 
darkened . - : : capnoptera, sp. n., p. 648. 
Abdomen not conical ; face less projecting, almost rounded 
as in Litorrhynchus; cross-veins not infuscated 
penthoptera, sp. n., p. 648. 
Wings entirely hyaline, or only slightly yellowish along the 
costal cell. 
