178 CHIKONOMIDjE. 



verse veinlet brown. Halteres whitish. Abdomen pale green, pubes- 

 cent. Legs pale green, slightly pubescent ; joints of the tarsi with 

 brown tips. 



Rare. In the British Museum. (E.) 



111. lentulus, n. Mas et Teem, testaceus, tJiorace vittis tribus 

 nigris, alis limpidis, venis halteribusque albis, illis apud costam testa- 

 ceis, abdomine nigro-viridi, pedibus fulvis. Long. 3-3| ; alar. 5-6 lin. 



Male and Fern. Testaceous. Palpi and antenna? black. Thorax with 

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

 testaceous, the rest white. Halteres white. Abdomen greenish-black, 

 with whitish pubescence. Legs tawny, minutely pubescent. 



Not common. (E.) 



112. perpessus, n. Mas, niger, ah's sublimpidis, venis halteri- 

 busque albidis, illis apud costam testaceis, pedibus fuscis, tarsis nigvi- 

 cantibus. Long. 3^ ; alar. 6 lin. 



Male. Black. Antennae with black plumes. Wings nearly limpid ; 

 costal, radial, and cubital veins pale testaceous, the rest whitish. Hal- 

 teres whitish. Legs brown, slender ; tarsi blackish. 



Rare. (E.) 



113. dolens, n. Mas, niger, alis albidis, venis albidis apud costam 

 testaceis, venula transversa halteribusque fuscis, pedibus fuscis subpilosis, 

 tibiis tarsisque anticis pilosissimis. Long. 4 ; alar. 6 lin. 



Male. Mack. Antennae with black plumes. Wings whitish ; costal, 

 radial, and cubital veins testaceous, the rest whitish ; discal transverse 

 veinlet dark brown. Halteres brown. Abdomen long, very hairy. 

 Legs brown, long, slender, slightly hairy ; fore tibia and fore tarsi very 

 hairy. 



Rare. In the British Museum. (E.) 



114. mcerens, C. D. B. M. i. 18 (1848). Mas, niger, valde ro- 

 bustus et pilosus, alis albidis basi nigricantibus, venis albis apud costam 

 albidis, venula transversa pallide fusca, halteribus fuscis, pedibus ferru- 

 gineis pilosissimis. Long. 4 ; alar. 6 lin. 



Male. Black, very stout, very hairy. Antenna? with black plumes. 

 Wings whitish, blackish at the base ; costal, radial, and cubital veins 

 whitish, the rest white ; discal transverse veinlet pale brown. Halteres 

 brown. Legs ferruginous, very hairy. 



Rare. In the British Museum. (E.) 



115. irritus, n. Mas, niger, alis sublimpidis, venis albidis, halte- 

 ribus albis, pedibus fuscis. Long. 1| ; alar. 2 lin. 



Male. Black. Antenna3 with black plumes. Wings almost limpid ; 

 veins whitish. Halteres white. Legs drown, slender. 

 Rare. (E.) 



116. variabilis? Streg. Dipt. Dan. 571. 44 (1840); Zett.t/eni- 

 culatus ? Meig. Mas et Fcem. niger, thoracc sordide testaceo rittis tribus 



