184 CHIRON OMIDjE. 



ribusque albidis, illis apud costam fuscis, pedibus validiusculis. Long. 

 2^; alar. 4 lin. 



Male. Black, stout. Antennae with black plumes. Thorax shining. 

 Wings nearly limpid; costal, radial, and cubital veins, and discal trans- 

 verse veinlet brown, the other veins whitish. Halteres whitish. Abdomen 

 pubescent. Legs rather stout. 



Bare. (E.) 



143. novatus, n. Mas et Fcem. nigro-cinereis, alts subcinereis, venis 

 albidis apud costam fuscescentibus, halter ibus albis, pedibus obscure fuscis. 

 Long. 1-^-2 ; alar. 2i-3i lin. 



Male and Fern. Cinereous-black. Wings very slightly greyish ; costal, 

 radial, and cubital veins pale brownish, the rest whitish. Halteres white. 

 Legs dark brown, slender. Male. Antennas with black plumes. 



Common. (E.) 



144. nigratus, n. Foem. niger, alls sublimpidis, venis albidis apud 

 costam nigricantibus, halteribus pedibusque testaceis, femoribus tibiis tar- 

 sisque apice nigricantibus. Long. 1 ; alar. 2 lin. 



Fem. Black. Wings nearly limpid ; costal, radial, and cubital veins 

 blackish, the rest whitish. Halteres testaceous. Legs testaceous, slender ; 

 tips of the femora, of the tibiae, and of the tarsi blackish. 



Eare. (E.) 



145. impensus, n. abdominalis? Stseg. ; Zett. Foem. niger, alis 

 albo-limpidis pubescentibus, venis halteribusque albis, abdomine rufescente, 

 pedibus testaceis validiusculis. Long, f ; alar. 1^ lin. 



Fem. Black. Wings limpid-white, pubescent ; veins and halteres white. 

 Abdomen reddish. Legs testaceous, rather short and stout. 

 Bare. In the British Museum. (E.) 



146. tibialis? Meig. Zw. i. 41. 47 (1818); Mcq.; Gim. ; Zett. 

 Var. ? Mas, niger, thoracis lateribus fulvis, alis sublimpidis, venis halteri- 

 busque albidis, illis apud costam testaceis, segmentorum abdominalium 

 marginibus posiicis cams, pedibus fuscescentibus, tibiis albido-unifasciatis. 

 Long. 2; alar. 3^ lin. 



Var. ? Male. Black. Antennas with brown plumes. Thorax tawny 

 on each side. Wings nearly limpid ; costal, radial, and cubital veins 

 testaceous, the rest whitish. Halteres whitish. Abdomen ivith a hoary 

 band on each segment. Legs brownish ; a whitish band on each tibia. 



Bare. In the British Museum. (E.) 



147. nexilis, n. Mas, canus, thorace vittis tribus nigricantibus, 

 alis sublimpidis, venis albidis apud costam fuscescentibus, halteribus albis, 

 abdomine piceo, pedibus testaceis, tibiis et tarsorum articulis apice ni- 

 gris. Long. 2^ ; alar. 4 lin. 



Male. Hoary. Antennas with black plumes. Thorax with three 

 blackish stripes. Wings nearly limpid; costal, radial, and cubital veins 

 pale brownish, tJie rest whitish. Halteres white. Abdomen piceous. 



