30 MUSCID.E. 



Fal. Nigra, cinereo-tomeutosa, capite albo, thorace nigro-quadrivittato, 

 alls at alulis cinereis, abdomine obconico ecyieo, tibiis ferrngineis. Long. 

 3A ; alar. 8 lin. 



Froiitalia deep black ; bristles of the front descending nearly along 

 the whole face ; face vertical ; facialia with bristles along one-sixth of 

 the length ; epistoma not prominent. Antennae not reaching the epi- 

 stoma ; second joint nearly twice longer than deep ; third snblinear, 

 longer than the second, rounded at the tip ; fourth almost obsolete ; 

 fifth very short ; sixth bare, stout at the base, more 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 one-third of the length ; 

 mediastinal vein ending at half of the length ; radial vein ending at 

 five-sixths of the length ; cubital vein ending near the costal ; pra^bra- 

 chial vein forming a very obtuse angle at its flexure, hardly carved in- 

 ward from thence to the tip ; discal transverse vein with two distinct 

 curves, parted by much more than half its own length from the flexure 

 of the prsebrachial, and by little more than half from the border. Ab- 

 domen slightly ceneous. 



Eare. lu the late Mr. Stephens^s collection. (E.) 



25. corusca, Meig. Zw. iv. 373. 61 (1S24). ^nea, capite albo, 

 thorace vix vittato, alls sublimpidis, alulis subcinereis, abdomine longi- 

 ovato cupreo. Long. 3 ; alar. 5 lin, 



Frontalia red, widening in front ; bristles of the front descending to 

 half the length of the face ; face vertical ; facialia without bristles ; 

 epistoma slightly prominent ; lateralia red. Antennae reaching the 

 epistoma ; second joint very much longer than deep ; third nearly 

 linear, rising in front, truncated, nearly twice longer than the second ; 

 fourth short ; fifth long ; sixth pubescent, stout to the tip, longer than 

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

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

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

 the length ; cubital vein ending near the tip of the costal ; praebrachial 

 vein forming a rounded and very obtuse angle at the fiexure, hardly 

 curved inward from thence to the tip ; discal transverse vein with two 

 very indistinct curves, parted by a little more than its length from the 

 flexure of the praebrachial, and by a little less from the border. Abdo- 

 men cupreous. 



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



26. chalybeata, Meig. Zw. iv. 271. 56 (1834) ; Mcq. ; Zett. 

 Nigra, capite albo, alis cinereis basi et antice subfuscis, alulis cinereis, 

 abdomine longi-ovato nifjro. Long. 4 ; alar. 8 lin. 



Bristles of the front descending along one-fourth of the face ; face 

 vertical ; facialia without bristles along oiu;-eighth of the length ; epi- 

 stoma not prominent ; eyes hairy. AnteniicC not reaching the epistoma ; 

 second joint much longer than deep ; third linear, rounded at the tip, 



