TACHINA, 83 



bis trientem setosis, antennarum articulo sexto basi incrassato, thorace 

 nigro-quadrivittato, scutello rufo, alis subcinereis, venis fusco subne- 

 bulosis, alulis albis, abdomine longi-obconico tessellato. Long. 4^ ; 

 alar. 10 lin. 



Frontalia deep black, striated, widening towards the antennae ; 

 bristles of the front descending to half the length of the face ; front 

 prominent. Facialia bristly for two-thirds of the length ; epistoma pro- 

 minent; palpi tawny. Antennas reaching the epistoma; third joint 

 about four times the length of the second ; flat above, slightly convex 

 beneath, obliquely rounded at the tip ; fourth and fifth short ; sixth 

 very minutely and almost imperceptibly pubescent, stout towards the 

 base, almost twice the length of the third. Costal vein ending at not 

 far from the tip of the wing ; subcostal vein at a little more than one- 

 third of the length ; mediastinal vein more than half the length ; radial 

 vein ending before four-fifths of the length ; cubital vein joining the 

 costal at a short distance from the prsebrachial ; prasbrachial vein form- 

 ing an obtuse angle at its flexure, near which it is slightly inclined in- 

 ward, and is thence almost straight to its tip ; discal transverse vein 

 with a curve at each end, parted from the border by a little less than 

 its length, and by much less than its length from the flexure of the 

 praebrachial. 



Eare. (E.) 



146. leucocephala, F. E.S. iv. 329. 74 (1792); Pz.; FaL; Meig.; 

 Desv. ; Mcq. ; Zett. labiata, F. Nigra, cano-tomentosa, capite ar- 

 genteo micante, antennarum articulo sexto ad dimidium incrassato, thorace 

 nigro-quadrivittato, alis subcinereis, alulis albidis, abdomine obconico 

 fusco-tessellato. Long. 2-3 ; alar. 4-6 lin. 



Head slightly conical in front ; vertex with grey tomentum. Fron- 

 talia deep black ; bristles of the front descending to one-fourth of the 

 face ; face oblique. Antennas reaching the epistoma ; third joint linear, 

 oblique at the tip, about six times the length of the second; sixth 

 thick for half the length, rather stout from thence to the tip, hardly 

 longer than the third. Costal vein ending where the prasbrachial meets 

 it, at some distance from the tip of the wing ; subcostal vein ending 

 at about one-third of the length ; mediastinal vein ending at half the 

 length ; radial vein ending at about four-fifths of the length ; cubital 

 vein ending at near the tip of the costal; prasbrachial vein form- 

 ing a very slightly obtuse angle at its flexure, which emits a very short 

 branch ; beyond this it is slightly curved inward, and is thence almost 

 straight to its tip ; discal transverse vein with the hind part slightly 

 curved inward, parted from the border by very much more than its 

 length, and by much less than its length from the flexure of the pras- 

 brachial. 



Not rare. (E.) 



147. frontosa, Meig. Zw. iv. 388. 259 (1824). Nigra, cinereo- 



