170 CHIKONOMID^. 



ajnceriiie nujricanilbus, pedibiis viri(Ud?(s, tibiis et tarsorura articulis apice 

 feraoribusque totis iiigricantibus. Long. 3-^; alar. 6 lin. 



Male. Black, shining. Antennie with black plumes. AVings limpid- 

 white ; costal, radial, and cnbital veins pale testaceous, the rest white. 

 Halteres whitish. Abdomen darl' green ; sutures and three apical seg- 

 ments blackish. Legs dull i)ale green, long, slender; femora and tips of 

 the tibiffi and of the joints of the tarsi blackish. 



Not commou. In the British Museum. (E.) 



76. tarsalis, Steph. MSS. Mas, niger, nitens, alis albo-lirapidis, 

 veiiis halteribusque albis, abdomine viridi a^ncem versus nigro, tarsis 

 ((Ibis. Long. 3 ; alar. 5 liu. 



Male. Black, shining. Wings limpid-white ; veins and halteres 

 white. Abdomen pale green, black towards the tip. Legs black, long, 

 slender ; tarsi white. 



Rare. In the British Museum. (E.) 



77. patens, n. Fcem. piceus, thorace iiitente, alis sublimpidis 

 pubescentibus, venis albidis apud costam testaccis, halteribus albis, 

 abdomine fusco, segmentorum marginibus posticis ventreque albidis, 

 pedibus testaceis, femoribus anticis apice subfuscescentibus. Long. 3 ; 

 alar. 6 lin. 



Fern. Piceous. Thorax shining. AYings almost limpid, pubescent ; 

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

 white. AlKlomen brown ; hind borders of the segments and under- 

 side whitish. Legs testaceous, long, slender; fore femora slightly 

 brownish towards the tips. 



Rare. In the British Museum. (E.) 



78. lugubris? Zett. Dipt. Scand. ix. 3490. 8 (1850). Mas, 

 niger, thorace cinereo vittis tribus nigris, alis limpidis, venis albis 

 apud costam nigricantibas, venula transversa nigra, halteribus albidis, 

 segmentorum abdominalium marginibus posticis ciuereis. Long. 4 ; 

 alar. 6 lin. 



Male. Black. Antenntc with black plumes. Thorax grey beneath 

 and on each side, and with two slender grey dorsal stripes. Wings 

 limpid ; costal, radial, and cubital veins blackish, the other veins white ; 

 discal transverse veinlet black. Halteres whitish. Abdomen pul)escent, 

 with a grey band on the hind border of each segment. Legs slender ; 

 posterior tibia3 and tarsi pubescent. 



Rare. (E.) 



79. enotatus, n. Mas, niger, thorace cinereo vittis tribus nigris, 

 alis sul)limpidis, venis apud costam halterib7isque fuscis, segmentorum 

 abdominalium marginibus posticis cauis, pedibus pallide fuscis. Long. 

 3 ; alar. 4 lin. 



Male. Black. Antenna; with black plumes. Thorax grey, with three 

 black stripes. Illngs nearly limpid ; costal, radial, and cubit((l veins, 

 and discal transverse veinlet, broivn, the other veins paler. Halteres 



