BY ARTHUR WHITE. 185 



4. Wings with iirst posterior cell open; first and 



second basal cells of equal length. 



SiSYROMYiA, Gen. nov. 

 First posterior cell closed. 5 



5. Wings with first basal cell much longer than the 



second. Bombylius, L. 



First and second basal cells of equal length. 



Systcechus, Lw. 



40. C Y R T o M R p H A, Gcu. nov. (Fig. 30). 



Small, bare, extremely humpbacked flies, resembling 

 Cyrtidce. Proboscis short ; wings with the discal cell want- 

 ing, and the cubital vein unforked. 



Fig. 30. Wing of Cyrtomorplia paganica. 



Head sm.all, situated low down below the greatly arched 

 thorax. Proboscis short, about half 'the length of the 

 liead, projecting forwards. Antennae a little shorter than 

 the head, the first and second joints apparently anastomos- 

 ed, and about half the length of the third, which is a slen- 

 der bulb-shape, tapering towards the apex, and provided 

 with a bare, thin style, which is but little shorter than 

 the third joint ; the antennae thus appear to consist of only 

 two joints and a long style. Thorax extremely gibbous, 

 bearing short, dense, upright jDubescence, but without any 

 sign of bristles. Abdomen broad, short, and rounded, 

 bearing short depressed pubescence. Legs slender, bare, 

 and without any sign of bristles. Wrings with the discal 

 cell wanting, and the cubital vein unforked; radial vein 

 unusually short ; discal vein forked ; first basal cell con- 

 siderably longer than the second basal cell ; anal cell rather 

 b)road, open. 



This genus seems to be most nearly allied to the Mediter- 

 ranean and Western Asiatic genus Cyrtosia, but is distin- 

 guished by the shoi^t instead of long proboscis, the shorter 

 radial vein, and differently placed discal vein. From all 

 the other known Australian genera of the BomhyJidce it 

 may be distinguished by the unforked cubital vein and by 

 the absence of the discal cell. This genus is proposed for 

 a scarce species, which is only known to occur in Tasmania. 



