TACHINA. 41 



before four-fifths of the length ; cubital vein slightly undulating, joining 

 the costal very near its tip ; prasbrachial vein forming a hardly obtuse 

 angle at its flexure, near which it is curved inward, and is thence almost 

 straight to its tip ; discal transverse vein almost straight, parted from 

 the border by much more than its own length, and by a little less than 

 its length from the flexure of the praebrachial. 

 Bare. (E.) 



49. particeps, n. Nigra, cano-tomentosa, capite albo, palpisful- 

 vis, thorace nigro-quadrivittato, alis subcinereis, alulis albis, abdomine 

 subelliptico subtessellato. Long. 3 ; alar. 6 lin. 



Frontalia piceous ; bristles of the front descending to half the length 

 of the face ; epistoma not prominent. Palpi tawny. Antenna not reach- 

 ing the epistoma ; third joint slightly increasing in depth from the base 

 to the tip, which is rounded, longer than the second ; sixth stout for one- 

 third of the length, very much longer than the third. Costal vein ending 

 at some distance from the tip of the wing ; subcostal vein ending at about 

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

 radial vein ending at about four-fifths of the length ; cubital vein join- 

 ing the costal near its tip ; prffibrachial vein forming a slightly obtuse 

 angle at its flexure, near which it is slightly inch'ned inward, and is 

 thence almost straight to its tip ; discal transverse vein very oblique, 

 with two slight curves, parted by more than its own length from the 

 border, and by much less than its length from the flexure of the prse- 

 brachial. 



Bare. (E.) 



50. exact a, n. Nigra, cano-tomentosa, antennarum articulo sexto 

 usque ad dimidium incrassato, thorace nigro-quinquevittato, alis cinereis, 

 abdomine elliptico tessellato. Long. 2 ; alar. 5^- lin. 



Bristles of the front extending along the whole face ; epistoma pro- 

 minent. Antenna not reaching the epistoma; third joint linear, 

 obliquely truncated at the tip, very much longer than the second ; sixth 

 pubescent and stout for nearly half the length, more than twice the 

 length of the third. Costal vein ending in front at some distance from 

 the tip of the wing ; subcostal vein ending at about one-third of the 

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

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

 slightly undulating, joining the costal very near its tip ; prsebrachial 

 vein forming a slightly obtuse angle at its flexure, near which it is 

 slightly curved inward, and is thence almost straight to its tip ; discal 

 transverse vein with two distinct curves, parted by very much more 

 than its length from the border, and by much less than its length from 

 the flexure of the prsebrachial. 



Bare. (E.) * 



* In page 16 a species has been referred to here, and No. 51 is omitted that the 

 grouping may correspond with the descriptions. 



VOL. II. G 



