8 MUSCID^E. 



half its own length. Alulae whitish. Sides of the abdomen tawny. 

 Fcem. Wings more or less brown in front and at the tips. 

 Eare. (E.) 



2. obesa, Fb. E. S. sppl. 561. 6 (1794); Latr.j Meig.; Desv. ; 

 Mcq. speciosa, Curt. ! B. E. 697. Cana, capite antice argenteo, an- 

 tennis abdomine basi pedibusque nigris, thorace nigro-quadrivittato, 

 alis subcinereis fusco variis. Long. 2^-3 ; alar. 6-7 1m. 



Head black, with hoary tomentum, white in front. Antennae black. 

 Thorax with four black stripes. Wings pale grey, more or less brownish 

 about the middle of the fore border, and towards the tips and along the 

 transverse veins ; costal vein ending at the tip of the wing ; subcostal 

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

 diastinal vein ending at much beyond half the length; radial vein 

 ending at about eleven-twelfths of the length ; cubital vein joining the 

 costal at its tip; discal transverse vein more or less curved inward, 

 parted from the border by hardlv half its own length. Alula3 white. 



Eare. (E.) 



3. pusilla, (Hoffm.) Meig. Zw. iv. 198. 23 (1824) ; Desv. ; Mcq. ; 

 Curt. ; Zett. semicinerea, Meig. ; Desv. ; Mcq. ; Curt. ; Zett. Nigra, 

 capite antice albo-tomentoso, alis hyalinis, abdomine apicem versus 

 cano-tomentoso. Long, lf-2; alar. 2-3^ lin. 



Slack. Head white in front. Facialia bristly along full half the 

 length. Antenna? reaching beyond half the length of the face ; third 

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

 sixth very minutely pubescent, hardly twice the length of the third. 

 Wings hyaline ; costal vein ending at the tip of the wing; subcostal 

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

 at about half the length ; radial vein ending at about seven-eighths of 

 the length ; cubital vein ending at the tip ; praBbrachial vein much curved 

 at its flexure, joining the cubital at far from the tip of the latter ; discal 

 transverse vein almost straight, parted from the border by about half 

 its own length. Alula3 white, very large. Abdomen hoary towards 

 the tip. 



Eare. (E.) 



Genus II. OCYPTERA. 



OCYPTEEA, Latr. G. C. iv. (1809); F. S. A.; Oliv.; Lam.; 



Mcq. ; Desv. ; Curt. ; Loew ; Winnertz ; Westw. ; Zett. Musca p., 



L.; F. Sp. I.; D. G.; Schr. ; Ross.; Gmel. Syrphus p., Pz. 



Rhizomyza p., Fal. Ocypteratce p., Desv. ; Mcq. ; Westw. Parthenia t 



Desv. 

 Corpus augustum. Palpi brevissimL Arista triarticulata, nuda. Vena 



