TACHINA. - 89 



nigro-quadrivittato, scutello ferrugineo, alis subcinereis, alulis albis, 

 abdomine obconico, segment! secundi lateribus tibiisque ferrugincis. 

 Long. 3i ; alar. 6 lin. 



Frontalia deep black ; bristles of the front descending to one-third 

 of the face ; face oblique ; facialia bristly along nearly the whole 

 length ; epistoma not prominent ; lateralia red. Antennae reaching the 

 epistoma ; third joint linear, rounded at the tip, more than four times 

 the length of the second ; sixth very minutely pubescent, tapering gra- 

 dually from the base to the tip, very much longer than the third. 

 Costal vein ending at some distance in front of the tip of the wing ; 

 subcostal vein ending at a little beyond one-third of the length ; me- 

 diastinal vein ending at much beyond half the length ; radial vein 

 ending at about four-fifths of the lengtli ; cubital vein joining the 

 costal very near its tip ; prsebrachial vein forming an almost right angle 

 at its flexure, near which it is slightl}' curved inward, and is thence 

 almost straight to its tip ; discal transverse vein with two very slight 

 curves, parted from the border by a little less than its length, and by 

 less than its length from the flexure of the prsebrachial. 



Bare. (E.) 



159. spinipennis, Meig. Zw. iv. 350. 193 (1824). Nigra, cano- 

 tomentosa, capite albido, frontalibus ferrugineis, arista angulafa, thorace 

 nigro-quadrivittato, alis sublimpidis, alulis albis, abdomine obconico, 

 basi et marginibus posticis nigris. Long. 2-2^ ; alar. 4-4+ lin. 



Frontalia broad ; bristles of the front descending to one-sixth of 

 the face ; face slightly oblique ; facialia bristly along the whole length ; 

 epistoma not prominent ; palpi tawny. Antennae reaching the episto- 

 ma ; second joint a little longer than deep ; third linear, rounded at 

 the tip, four times the length of the second ; fourth and fifth very long ; 

 sixth stout to the tip, nearly twice the length of the third, forminy an 

 angle with tlie fifth. Costal vein ending at hardly in front of the tip of 

 the wing ; subcostal vein armed with spines, ending at beyond one- 

 thiril of the length ; mediastinal vein ending at a little beyond half of 

 the length ; radial vein ending at about seven-eighths of the length ; 

 cubital vein joining the costal near its tip ; prabrachial vein forming 

 a very obtuse angle at the flexure, hardly curved inward from thence 

 to the tip ; discal transverse vein straight, parted by very much more 

 than its length from the flexure of the pra;brachial, and by a little more 

 than its lengtli from the border. 



Bare. (E.) 



160. accidens, n. Nigra, gracilis, capite albo, thoracis lateribus 

 albido-tomentosis, alis subcinereis, alulis pallide testaceis, abdomine 

 cyliudrico, segmentorum marginibus anticis albidis, pedibns nigris. 

 Long. 3 ; alar. 5| lin. 



Frontalia deep black ; bristles of the front not descending along the 

 face; facialia bristly along three-fourths of the length; epistoma not 

 VOL. II. • N 



