150 [J«iy. 



large, and as long as the last abdominal segment, the bristles at its 

 extremity of the usual size barely 1 mm. pallens, n. sp. 



7 (6) Halteres Hack. Arista miich longer than frons. 



8 (9) Pleurae ivitli a very large and spine-like bristle on each side, besides smaller 



ones. 

 3 ■ Described from a single specimen : Thox-ax and abdomen black, the latter 

 witli pale hind margins to the segments, the spine-like bristle very con- 

 spicuous and situate high iip on the pleura close to the root of the wing ; 

 frons black, -| broader than long, 4 large and nearly equal svipra-antennal 

 bristles, the upper pair wide apart and outside an alignment with inner 

 bristle of middle frontal row, the under pair considerably below them and 

 approximated ; outer bristle of loAver frontal row much above the level 

 of the inner one, antenna; not small, palpi yellow ; wings lightly tinged 

 with grey, thiclc veins black, costa f wing length, fringe very short, 1 

 fully half as long again as 2 + 3, angle at fork large ; legs bro^vn, hind 

 femora with some long, loose hairs on basal half of vmder-side, tibial cilia 

 weak but fairly distinct and bristly in character ; hypopygium almost 

 entirely concealed within the last segment, but as far as can be judged it is 

 very short, a small subanal body being exposed but no ventral plate, 

 whilst the yellow anal organ is very large and as long as the last alidominal 

 segment about f mm. spinata, n. sp. 



9 (8) Pleurse without such bristle. 



10 (11) Terminal joint of fore tarsi dilated. Wingslimpid,thin veins colourless. 



(J . Described from a single specimen : Thorax and abdomen black ; frons dull, 

 about i broader than long, apparently but one pair of small and closely 

 approximated supra-antennal bristles, antennae small, palpi dusky yellow ; 

 wings limpid with colourless thin veins, costa hardly more than i wing 

 length, it and the supporting veins black, fringe very short, 1 about f as 

 long again as 2 + 3, angle at fork large ; legs brownish-black, end joint 

 of fore-tarsi dilated, distinctly wider than the penultimate joint instead of 

 narrower as usual, under-side of hind femora remarkably serrated near the 

 base with about 4 blunt teeth, hind tibite bare ; hypopygiiun withdrawn 

 within the last segment, leaving exposed only a rather large and depressed 

 black anal organ barely more than 2 nun. serrata, n. sp. 



11 (10) Terminal joint simple. 



12 (13) Abdomen strikingly banded with whitish hind margins to the segments. 



$ ? . Thorax and abdomen black, halteres bro\\Ti ; frons dull, aboiit \ broader 

 than long, 4 large and nearly equal supra-antennal bristles, the under pair 

 almost directly underneath the upper, antennae small, palpi yellow ; wings 

 nearly clear, thin veins fine and delicate, costa rather more than | wing 

 length, fringe very short, 1 more than doulile 2+3, angle at fork 

 moderate ; legs blackish ( $ ) bro^vner ( ? ), fore tarsi somew^hat short and 

 thick, tibial cilia very short and delicate ; hypopygium large with some 

 long hairs on each side, ventral plate small and yellowish, anal organ 

 black, short and stout . . .about 1 mm. verralli, n. sp. 



