DIPTERA. 299 
longer than the third, stout for half the length, very slender from thence to 
the tip: chest and abdomen with a hoary covering : chest with three black 
stripes: abdomen oval, not longer than the chest, thickly beset with long 
black bristles: wings very slightly gray ; veins black, tawny towards the 
base ; prebrachial vein forming a very obtuse angle at its flexure, very 
slightly inclined inward from thence to its tip; lower cross-vein very 
slightly curved inward about the middle: alule white. Length of the body 
24 lines; of the wings 4 lines. = 
United States. 
TacuHINA ANcILLA, Fem. 
Nigra; caput album; thorax canus ; abdominis segmenta cano fasciata ; 
ale sublimpide. 
Black : head with a shining white covering ; crown with a cinereous 
tinge; frontalia pitchy, slightly widening at each end ; facialia beset with 
bristles along two-thirds of the length; epistoma yellowish, not promi- 
nent: palpi tawny : feelers black; third joint linear, slender, truncated at 
the tip, more than thrice the length of the second, reaching the epistoma ; 
sixth very slender, stout towards the base, a little longer than the third: 
chest with a hoary covering : abdomen obconical, not longer than the chest, 
with hoary bands along the fore borders of the segments: wings almost co- 
lourless ; veins black, tawny towards the base ; prebrachial vein forming a 
very obtuse angle at its flexure, hardly bent inward towards its tip, which 
is almost united on the border to that of the cubital vein ; lower cross-vein 
very slightly bent inward in the middle: alule white. Length of the body 
1} line; of the wings 3 lines. 
United States. 
TACHINA sUBVARIA,* Fem. 
Nigra, albida; thorax nigro quadrivittatus ; abdominis segmenta nigro 
fasciata; antenna et pedes nigra; ale cinerea. 
Black, with a white covering : head pale gold-colour on each side of 
the frontalia and of the face, clothed beneath and behind with white hairs; 
See ee EEE 
* Page 265, line 20, for olbconica read subyaria. 
