40 MUSCID/E. 



decreasing in depth from the base to the tip, which is rounded, more 

 than twice the length of the second ; fourth almost obsolete ; fifth very 

 short ; sixth very minutely pubescent, nearly twice the length of the 

 third ; thorax with two very slender black stripes. Costal vein ending 

 at some little distance in front of the tip of the wing ; subcostal vein 

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

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

 the length ; cubital vein ending very near the tip of the costal ; pras- 

 brachial vein forming an obtuse angle at its flexure, hardly curved in- 

 ward from thence to the tip, which joins the tip of the cubital ; discal 

 transverse vein slightly curved inward, parted by more than its length 

 from the flexure of the prabrachial, and by a little less from the border. 

 Hind borders of the second and third segments of the abdomen with a 

 black spot on each side. 



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



47. conica, Fal. Muse. 19. 14 (1810) ; Meig. Nigra, cinereo- 

 tomentosa, capite albo, palpis nigris, antennarum articulo sexto nudo, 

 thoracis lateribus albidis, alls sublimpidis, alulis albis, abdomine obco- 

 nico e maculis fuscis trivittato. Long. 2 ; alar. 4 lin. 



Bristles of the front not descending below the eyes ; face vertical ; 

 epistoma not prominent; palpi Hack, very slender. Antenna not 

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

 linear, truncated, about twice the length of the second ; fourth indis- 

 tinct ; fifth short ; sixth bare, very much longer than the third. Cos- 

 tal vein ending at some distance in front of the tip of the wing ; sub- 

 costal vein ending at a little beyond one-third of the length ; medias- 

 tinal vein ending at before half of the length ; radial vein ending at 

 about five-sixths of the length ; cubital vein ending at near the tip of 

 the costal ; prasbrachial vein forming a hardly obtuse angle at the 

 flexure, curved inward near this, and thence straight to the tip ; discal 

 transverse vein with two very slight curves, parted by much less than 

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



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



48. evoluta, n. Nigra, gracilis, cinereo-tomentosa, capite albo, 

 palpis nigris, antennarum articulo sexto fere ad trientem pubescente, alis 

 cinereis, alulis albis, abdomine longi-obconico tessellato. Long. 2^ ; 

 alar. 4 lin. 



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

 of the face ; epistoma not prominent ; palpi black. Antenna not reach- 

 ing the epistoma ; third joint linear, rather broad, rounded at the tip, 

 less than twice the length of the second ; sixth pubescent for nearly 

 one-third of the length, nearly twice the length of the third. Costal 

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

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

 ending at a little before half the length ; radial vein ending at a little 



