210 
Psyche 
[October 
5. Front much shortened, twice as broad as high; four pro- 
clinate bristles of equal size curtifrons Brues. 
Front quadrate, or with the lower proclinate bristles weaker 
than the upper pair 6 . 
6. Halteres black, much darker than the mesonotum 7 . 
Halteres pale, much lighter than the mesonotum 10 . 
7. Costal vein extending far beyond the middle of the wing; 
fourth vein curved forward at both base and apex; 
wings distinctly infuscated chipensis Brues 
Costal vein not noticeably more than half the wing-length 
8 . 
8. Four well developed proclinate bristles, setulae of hind 
tibi^B well developed 9 . 
Only two proclinate bristles, the lower pair reduced to fine 
hairs, hind tibiae obsoletely setulose meracula Brues. 
9. Costal bristles extremely minute; setulae of hind tibiae 
rather small meijerei Brues. 
Costal bristles larger, but rather short; setulae of hind 
tibiae long sauteri Brues. 
10. First section of costa longer than the second 11. 
Second section of costa longer than the first 13 . 
11. Wings hyaline; front about as wide as high; second vein 
nearly perpendicular to the costa nana Brues. 
Wings distinctly infuscated; front wider than high 12. 
12. Costal cilia very short and densely placed; abdominal ter- 
gites normal formosana sp. nov. 
Costal cilia long and rather closely placed; third tergite 
reduced in female pediceUata sp. nov. 
13. Middle row of frontal bristles forming a straight trans- 
verse row; thorax piceous; hindlegs very slender. 
recta Brues. 
Middle row of frontal bristles strongly curved downwards 
mediall}^ thorax yellowish brown; legs moderately stout. 
curva Brues. 
14. Costal vein less than two fifths as long as the wing. 
insulana Brues. 
Costal vein extending to the middle of the wing 15 . 
