158 CHIEONOMID^:. 



19. prasinatus? Staeg. Dipt. Dan. 568. 26 (1840); Zett. Mas, 

 viridis, thorace vittis tribus nigris, alia limpidis, venis albidis apud cos- 

 tarn iestaceis, halteribus albis, pedibus pallide testaceis. Long. 1^ ; 

 alar. 2 lin. 



Male. Green. Antennae with blackish plumes. Tliorax with three 

 black stripes. Wings limpid ; costal, radial, and cubital veins testaceous, 

 the rest whitish. Halteres white. Legs pale testaceous. 



Not common. (E.) 



20. pusio? Meig. Zw. vi. 256. 117 (1830). Mas, obscure viridis, 

 thorace vittis tribus nigris, alis limpidis, venis pallide testaceis, halteribus 

 pallide viridibus, pedibus pallide testaceo-viridibus. Long. If; alar. 

 3 lin. 



Male. Dark green. Tliorax with three black stripes. Wings limpid; 

 veins pale testaceous. Halteres pale green. Legs pale dull testaceous- 

 green. 



Not common. (E.) 



21. longipes? Steg. Dipt. Dan. 570. 38 (1840); Zett, Icem. 

 viridis, thorace vittis tribus testaceis, alis albido-limpidis, venis halteri- 

 busque albidis, illis apud costam fuscescentibus, abdomine fusco, segmen- 

 torum marginibus posticis subcanis, pedibus testaceis, tarsis fuscescen- 

 tibus. Long. 2i; alar. 4 lin. 



Var. ? Fern. Green. Thorax with three testaceous stripes. Wings 

 whitish, limpid ; costal, radial, and cubital veins, and discal transverse 

 veinlet brownish, the rest whitish. Halteres whitish. Abdomen pubes- 

 cent, dark brown ; hind borders of the segments slightly hoary. Legs 

 testaceous ; tarsi brownish. 



Not common. (E.) 



22. perlevis, n. Fcem. viridis, thorace vittis tribus testaceis, alis 

 subcinereis, venis albidis apud costam testaceis, halteribus albis, abdo- 

 mine fusco, pedibus pallide testaceis. Long. 1 ; alar. 2 lin. 



Fern. Green. Thorax with three testaceous stripes. Wings greyish ; 

 costal, radial, and cubital veins testaceous, the rest whitish. Halteres 

 white. Abdomen brown. Legs pale testaceous. 



Not common. (E.) 



23. viridis, Fries, MSS. ; Mcq. ; H. N. D. i. 52. 21 (1834) ; 

 Meig. ; Staeg. ; Zett. Mas et Foem. viridis, thorace vittis tribus tes- 

 taceis, alis limpidis, venis albidis apud costam testaceis, halteribus albis, 

 pedibus pallide testaceis, tibiis et tarsorum articulis apice nigricantibus. 

 Long. l|-2 ; alar. 3-4 lin. 



Male and Fem. Green. Thorax with three testaceous stripes. Wings 

 limpid; costal, radial, and cubital veins testaceous, the rest whitish. 

 Halteres white. Legs pale testaceous; tips of the tibiae and of the 

 joints of the tarsi blackish. Male. Antennae with brown plumes. 



Generally distributed. (E. S. I.) 



24. nervosus? Stseg. Dipt. Dan. 567. 25 (1840); Zett. Feem. 



