TACHINA. 73 



second ; sixth stout and very minutely pubescent for one-third of the 

 length, more than twice the length of the third. Costal vein ending 

 where the prsebrachial meets it at a little above the tip of the wing ; 

 subcostal vein ending at beyond one-third of the length ; mediastinal 

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

 four-fifths of the length ; cubital vein ending at very near the tip of 

 the costal ; prrebrachial vein forming a very obtuse angle at its flexure, 

 from whence to its tip it is hardly curved inward; discal transverse 

 vein with the hind curve deeper than the other, parted from the border 

 and from the flexure of the prsebrachial by much less than its length. 

 Not rare. (E.) 



123. delitescens, n. Nigra, cano-subtomentosa, capite albo, pal- 

 pis fulvis, thorace nigro-vittato, scutello ferrugineo, alis subcinereis, 

 alulis albidis, abdomine obconico subtessellato lateribus ferrugineis. 

 Long. 4 ; alar. 9 lin. 



Frontalia piceous, widening in front ; bristles of the front descending 

 to one-eighth of the face ; epistoma not prominent ; palpi tawny. An- 

 tennas nearly reaching the epistoma ; third joint slightly convex above, 

 beneath, and at the tip, about twice the length of the second ; sixth 

 piceous, tapering, testaceous at the* base, about twice the length of the 

 third. Costal vein ending at very little in front of the tip of the wing ; 

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

 astinal vein ending at beyond half the length ; radial vein ending at a 

 little beyond five-sixths of the length ; cubital vein joining the costal 

 near its tip ; prsebrachial vein forming a slightly obtuse angle at its 

 flexure, near which it is very slightly curved inward, and is thence al- 

 most straight to its tip ; discal transverse vein with two rather slight 

 curves, parted from the border by about half its length, and by much 

 less than its length from the flexure of the prsebrachial. 



Rare. (E.) 



124. augens, n. Nigra, cano-tomentosa, capite albo, palpis niyris, 

 thorace nigro-quadrivittato, alis subcinereis, alulis albis, abdominis 

 lateribus basi testaceis. Long. 3 ; alar. 6 lin. 



Frontalia deep black, ferruginous towards the ocelli ; bristles of the 

 front descending to one-fourth of the face ; front slightly prominent ; 

 epistoma white, prominent; lateralia tawny; palpi black. Antennse 

 almost reaching the epistoma ; third joint linear, slightly oblique and 

 almost obtuse at the tip, nearly twice the length of the second ; fifth 

 distinct; sixth very minutely pubescent, stout towards the base, less 

 than twice the length of the third. Costal vein ending at very little in 

 front of the tip of the wing ; subcostal vein ending at a little more than 

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

 radial vein ending at a little beyond four-fifths of the length ; cubital 

 vein joining the costal very near its tip ; prsebrachial vein forming a 

 curve at its flexure, almost straight from thence to its tip ; discal trans- 



VOL. n. L 



