84 MUSCID.E. 



tomentosa, capite albo, antennarum articulo sexto ad bis trientem incras- 

 sato, thorace nigro-quadrivittato, alls subcinereis, alulis albis, abdo- 

 mine elliptico tessellato. Long. 2i-2-| lin. ; alar. 4-4-| lin. 



Frontalia deep black, linear ; front prominent ; bristles of the front 

 descending to one-fourth of the face ; face very oblique ; epistoma not 

 prominent. Antennae reaching the epistoma ; second joint very little 

 longer than deep ; third linear, truncated, four times the length of the 

 second ; fourth indistinct ; fifth of moderate length ; sixth bare, stout 

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

 at far in front of the tip of the wing ; subcostal vein ending at beyond 

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

 of the length ; radial vein ending at beyond three-fourths of the length ; 

 cubital vein ending very near the tip of the costal ; prcebrachial vein 

 forming a right angle at the flexure, which emits a long branch, curved 

 inward near this, and thence almost straight to the tip ; discal trans- 

 verse vein with two very slight curves, parted by less than its length 

 from the flexure of the prasbrachial, and by much more from the 

 border. 



Rare. In Mr. Desvignes's collection. (E.) 



148. quadricincta, Steph. MSS. Nigra, cano-tomentosa, ca- 

 pite albo, facialibus non setosis, thorace nigro-quadrivittato, alis sublim- 

 pidis, alulis albidis, abdomine obconico, basi marginibus posticis vitta- 

 que dorsali nigris, femoribus subtus piceis. Long. 2 ; alar. 4 lin. 



Frontalia piceous, slightly narrower in front ; bristles of the front 

 descending to one-third of the length of the face ; face vertical ; fa- 

 cialia without bristles; epistoma not prominent. Antennae almost 

 reaching the epistoma ; second joint a little longer than deep ; third 

 linear, rounded at the tip, about four times longer than the second ; 

 fourth indistinct; fifth rather long; sixth very minutely pubescent, 

 stout for half the length, rather less than twice the length of the third. 

 Costal vein minutely ciliated, ending at a little in front of the tip of 

 the wing; subcostal vein ending at much beyond one-third of the 

 length ; mediastinal vein ending at much beyond half of the length ; 

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

 ending near the costal ; prrebrachial vein forming a very obtuse angle 

 at the flexure, hardly curved inward, from thence to the tip ; discal 

 transverse vein with two slight curves, parted by a little more than 

 its length from the flexure of the prrebrachial, and by much more from 

 the border. 



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



149. volatica, Mcq. A. S. E. F. ser. 2. vii. 414. 95 (1849). Nigra, 

 cano-tomentosa, capite argenteo, antennarum articulo sexto ad bis trientem 

 setoso, thorace nigro-quadrivittato, scutelli margine fulvo, alis subhyali- 

 nis, alulis albis, abdomine tessellato. lateribus basi ferrugineis. Long. 

 3 1 ; alar. 7 lin. 



