MUSCA. 113 



16. serena, Meig. Zw. v. 59. 18 (1826); Mcq.; Zett. Viridis, 

 capite argenteo, oculis nudis, palpis antennis pedibusque nigris, anten- 

 narum articulo tertio secundo triplo longiore, alls limpidis, abdomine 

 nonnunquam cyaneo. Long. 2f ; alar. 5 lin. 



Bright green. Head with silvery-white tomentum ; frontalia black ; 

 facialia bristly for one-fourth of the length ; epistoma not prominent ; 

 proboscis, palpi, antennae, and legs black. Antennae not reaching the 

 epistoma ; third joint about thrice the length of the second ; sixth plu- 

 mose nearly to the tip. Thorax with three broad rather indistinct 

 hoary stripes. Wings limpid ; subcostal vein ending at a little beyond 

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

 the length ; radial vein ending at seven-eighths of the length ; prsebra- 

 chial vein very indistinctly undulating between its flexure and its tip ; 

 discal transverse vein with a distinct inward curve in the middle, and 

 a very indistinct outward curve at each end, parted from the border 

 by much more than half its length, and by much more than its length 

 from the flexure of the praebrachial. Alulse white. Abdomen golden- 

 green. Halteres luteous. Var. /3. Abdomen blue. 



Not common. (E.) 



17. hortomm, Fal. Muse. 52. 33 (1810) ; Meig. ! Zw. v. pi. 43. 

 f. 33 ; Weid. ; Mcq. ; Zett. importuna, Desv. Nigra, capite argenteo, 

 thorace cano-trivittato, alis sublimpidis, abdomine nigro-viridi subtes- 

 sellato. Long. 2^-3^; alar. 5-7 liu. 



Black, with hoary tomentum. Head with silvery tomentum ; fron- 

 talia black ; facialia bristly along half the length ; epistoma not pro- 

 minent. Antennas nearly reaching the epistoma ; third joint almost 

 reaching the epistoma, full thrice the length of the second ; disc of the 

 thorax black, with three hoary stripes. Wings nearly limpid ; sub- 

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

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

 at about seven-eighths of the length ; discal transverse vein very slightly 

 curved inward in the middle, parted by more than its length from the 

 flexure of the prsebrachial, and by much more than half its length from 

 the border. Alulas whitish. Abdomen greenish-black, slightly tessel- 

 lated. 



Very abundant. (E. S. I.) 



18. stabulans, Fal. Muse. 52. 32 (1810) ; Meig. ; Mcq. ; Zett. 

 cinerascens, Wied. Nigra, cano-tomentosa, capite argenteo, thorace 

 quadrivittato, scutello femoribusque apice tibiisque ferrugineis, alis 

 cinereis, abdomine fuscescente tessellato. Long. 4| ; alar. 9 lin. 



Allied to Antliomyia. Black, with cinereous tomentum. Head sil- 

 very ; frontalia deep black ; facialia bristly for one-third of the length ; 

 epistoma not prominent. Antennae not reaching the epistoma ; second 

 joint ferruginous at the tip ; third about twice the length of the second ; 

 sixth plumose to two-thirds of the length. Thorax with four black 



VOL. II. Q 



