92 MUSCID^, 



discal transverse vein almost straight, parted by much less than its 

 length from the border, and by a little less from the flexure of the 

 jjraebrachial. 



Rare. In the late Mr. Stephens's collection. (E.) 



165. impavida, Mcq. A. S. E. F. vii. 395. 60 (1849). Nigra, 

 cano-tomeutosa, capite a[ho,faciaUbtis ad quartam setosis, thorace nigro- 

 quadrivittato, scutello apice ferrugineo, alis sublimpidis, alulis albidis, 

 abdomine ovato subtessellato. Long. 3 ; alar. 6 lin. 



Frontalia piceous ; bristles of the front descending to one-third of 

 the face ; face very slightly oblique ; facialia bristly for one-fourtlt of 

 the length ; epistoma not prominent. Antennse reaching the epistoma ; 

 third joint linear, rather broad, almost tmncated at the tip, full four 

 times the length of the second ; sixth very minutely pubescent, stout for 

 two-thirds of the length, longer than the third. Costal vein ending at 

 very little in front of the tip of the wing ; subcostal vein ending at 

 beyond one-third of the length ; mediastinal vein encbng at much 

 beyond half the length ; radial vein ending at beyond five-sixths of 

 the length ; cubital vein joining the costal very near its tip ; prsebra- 

 chial vein forming a very obtuse and not sharply defined angle at its 

 flexure, very slightly curved inward near its tip ; discal transverse vein 

 with two very slight curves, parted from the border by a little less than 

 its length. 



Rare. (B.) 



166. carbonaria, Pz. ! Fn. liv. 15; Fal. Rhzm. 8. 9. Atra, ni- 

 tens, angusta, capite albo-tomentoso, alis cinereis antice nigricantibus, 

 venis cubitali et prahrachiall in discum cotmexis, alulis albis, abdomine 

 fusiformi. Long. 2 ; alar. 4 lin. 



Frontalia narrow ; bristles of the front descending along one-third 

 of the face; face vertical; facialia without bristles; epistoma not 

 prominent. Antennae nearly reaching the epistoma ; second joint 

 much longer than deep ; third linear, slightly truncated, much longer 

 than the second ; fourth almost obsolete ; fifth short ; sixth stout at 

 the base, plumose nearly to the tip, a little more than twice the length 

 of the third. Costal vein with a spine by the tip, ending far in front 

 of the tip of the wing; subcostal vein ending before one-third of the 

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

 vein ending at beyond five-sixths of the length ; cubital vein ending 

 at the tip of the costal ; lyrcehrachial vein forming a very slightly obtuse 

 angle at the flexure, curved inward near this, and thence almost 

 straight, and joining the cubital at some distance from the tip of the 

 latter ; discal transverse vein almost straight, parted by nearly twice 

 its length from the flexure of the prffibrachial and from the border. 



Rare. In the late Mr. Stephens's collection. (E.) 



