76 
DIPTERA. 
1. Second and third abdominal segments with discal and marginal 
macrochete . a 2) 
Second and third abdominal segments only with marginal 
macrochete . soe ee . 12. 
2. Tegule and base of the wings brown . 3. 
Tegule whitish ; wings not infuscated at the base . 5. 
3. Arista thickened to beyond the proximal half; middle tibice 
outwardly with from two to four long bristles tenebricosa, v. d. Wulp. 
Arista thickened for less than the proximal half; middle tibiee 
outwardly and inwardly with a single long bristle . 4. 
4. Hind tibiz outwardly fringe-like with bristles . nigrita, v. d. Wulp. 
Hind tibize outwardly with bristles of unequal length carbonaria, v. d. Wulp. 
5. Thorax unicolorous black, without stripes 6. 
Thorax cinereous or greyish, with more or less conspicuous 
black stripes . 2. 1. 1 2 ee we 7. 
6. Front and face laterally fulvous parvula, v. d. Wulp. 
Front and face black, opaque woe ee ew ee triceps, v. d. Wulp. 
7. Abdomen elongate-conical ; first segment (seen from above) as | 
long as the second ; (proboscis rufous) rufilabris, v. d. Wulp. 
Abdomen ovate; first segment (seen from above) shorter than 
the second . . oe 8. 
8. Palpi black; anal segment ochraceous . wo xanthura, v. d. Wulp. 
Palpi rufous; anal segment black, with more or less extended 
white or grey portions . . 9. 
9. The frontal bristles accompanied externally bys some ve weak black 
hairs - . . 10. 
The frontal bristles unaccompanied by hairs externally . . 1. 
10. Eyes not descending to the vibrissz fulviceps, v. d. Wulp. 
Eyes descending to the vibrissz . nigrifrons, v. d. Wulp. 
11. Abdomen grey, with the hind borders of the segments black . cimerea, v. d. Wulp. 
Abdomen black, with whitish tomentum on the second and 
third segments coke cylindrata, v. d. Wulp. 
12. Abdomen shining black, nearly unicolorous_ immaculata, v. d. Wulp. 
Abdomen with grey or whitish portions . 13. 
18. Anal segment ochraceous flavicauda, v. d. Wulp. 
Anal segment grey or black . 14, 
14. Palpi black muscaria, v. d. Wulp. 
Palpi rufous . . soe : wee . 15. 
15. Third vein with a row of short bristles reaching to near ‘the 
small cross-vein . . se ee ee ee . 16. 
Third vein without bristles or only some bristles at the base . 17. 
16. Wings with a dilute brownish tint along the veins; third vein 
slightly curved before its end - 
Wings without any brownish tint; third vein nearly straight . 
sobrina, v. d. Wulp. 
setigera, v. d. Wulp. 
