26. 
27. 
29. 
30. 
3l. 
32. 
33. 
84. 
35. 
36. 
37. 
38. 
TACHININA. 
twice as long as the second; veins not bristly ; fourth vein 
not prolonged at its point of curvature; cross-veins not 
more oblique than usual . woe ek . 
Fourth vein prolonged at its point of curvature ; front very 
prominent. . .. . oe . 
Fourth vein not prolonged at its point of curvature ; front 
little prominent. . . . ee + soe 
Eyes proportionally small ; arista thickened for nearly its 
entire length . . 
Eyes large, descending to 3 near the underside of the head ; 
arista usually thickened on its proximal half only 
. Proboscis long and slender, its apical half turned backward . 
Proboscis of usual shape woe . 
Arista distinctly jointed ; some of the veins with a row of 
bristles. .C)2" vTetg Wy PIEK Spy) 
Arista not visibly jointed ; 3 veins not bristly 
Scutellum and abdomen very densely beset with macrochzte ; 
eyes hairy . . . . 
Scutellum and abdomen with normal, regularly arranged 
macrocheetz ; eyes usually bare (only in the genera Mac- 
quartia and Didyma pilose) . . 
Abdomen elongate-conical or cylindrical ; tarsi of ‘the front 
legs usually notably longer than the tibie . 
Abdomen short-conical, ovate or rounded ; tarsi as long as 
the tibize or shorter. 
Eyes hairy . 
Eyes bare . woe 
Antenne much shorter than the face ; 
long as the second . . 
Antenne nearly as long as the face third joint three or more 
times longer than the second 
Wings scarcely longer than the abdomen, broad and rounded 
at the tip ; black species (in female the anus furcate) 
Wings notably longer than the abdomen, rather narrow ; 
mostly rufous or yellowish species . 
Front as broad as the eyes; third antennal joint broad, con- 
vex on the front side ; abdomen cylindrical . . 
Front narrower than the eyes; third antennal joint linear ; 
abdomen conical. . 
Apical cell opened « . «1 ew es 
Apical cell closed . 
Facial ridges with a row of bristles . . 
Facial ridges without bristles. . . . . . . 
Eyes bare 2. 2. 6 + © ee ee ee 
Eyeshairy. . - - 2 + ee ee ew ee 
third joint twice as. 
43 
Masicera, Macq. /0 3 
Metopia, Meig. //4 
27. 
Baumhaueria, Meig. //S~ 
Prospherysa, v. d. Wulp. //6 
Siphona, Meig. /2S” 
29. 
Thryptocera, Macq. / 2-"] 
30. 
Lasiona, v. d. Wulp. /2"] 
31. 
32. 
36. 
Macquartia, Rob.-Desv. / 2 ¥ 
33. 
34. 
35. 
Labidigaster, Macq. /3| 
Myobia, Rob.-Desy. | 9 > 
Polygaster, v.d. Wulp. ]39 
Hypostena, Meig. /4/0 
37. 
43. 
38. 
39. 
Degeeria, Meig. [30 _ 
Didyma, v. d. Wulp. /5G 
g2 
