184 CHlBONOMIDiE. 



ribiisqiie albidis, illis ajmd costam f/iscis, pedibus validiusculis. Long. 

 2i; alar. 4 lin. 



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

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

 vei'se veinlei b^'otm, the other veins tchitish. Halteres whitish. Abdomen 

 pubescent. Legs rather stout. 



Rare. (E.) 



143. novatus, n. Mas et Foem. nigro-cinereis, alls subcinereis, venis 

 albidis apud costam fuscescentibus, halter ibus a\bis, j^edibus obscure fuscis. 

 Long, li-2 ; alar. 2^-3i lin. 



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

 radial, and cubital veins jmle broionish, the rest whitish. Halteres white. 

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



Common. (E.) 



144. xiigratus, n. 'Fceni. niger, alls sublimpidis, venis albidis apud 

 costam nigricantibus, halteribus pedibusque tesfaceis, femoribus tibiis tar- 

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



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

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

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



Rare. (E.) 



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



albo-Umpldis puhescentibus, venis halteribiisque albis, abdomine rtifescente, 

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



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

 Abdomen reddish. Legs testaceous, rather short and stout. 



Rare. 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- 

 biisque albidis, illis apud costam testaceis, segmentorum abdominalium 

 marginibus posticis canis, pedibus fuscescentibus, tibiis albido-unifasciatis. 

 Long. 2 ; alar. Bh lin. 



Var. ? 31ale. Black. Antennse with brown plumes. Tlcorax taicny 

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

 testaceous, the rest whitish. Halteres tvhitish. Abdomen tcith a hoary 

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



Rare. In tlie 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. 2i ; alar. 4 lin. 



Male. Hoary. Antenna) with black plumes. Thorax icith three 

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

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



