CH1RONOMUS. 179 



latis fere contiguis nigris, alis subcinereis, venis albidis apud costam 

 nigris, halteribus albis, abdomine nigro-fusco, pedibus fuscis, tarsis nigris. 

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



Male and Fern. Black. Thorax above dingy testaceous, with three broad 

 almost confluent black stripes. Wings slightly greyish ; costal, radial, 

 and cubital veins, and discal transverse veinlet black, the rest whitish: 

 Halteres white. Abdomen brownish-black, not pubescent. Legs brown, 

 long, slender ; tarsi black. Male. Antennae with black plumes. 



Not common. (E.) 



117. intrudens, n. Mas et Fcem. niger, thorace fulvo yittis tribus 

 nigris, alis subcinereis, venis albidis apud costam fuscescentibus, halte- 

 ribus testaceis, pedibus ferrugineis, tibiis anticis tarsisque nigricantibus. 

 Long. 3-3-i- ; alar. 5-6 lin. 



Male and Fern. Black. Thorax tawny, with three black stripes. Wings 

 slightly greyish ; costal, radial, and cubital veins, and discal transverse 

 veinlet brownish, the other veins whitish. Halteres testaceous. Legs 

 ferruginous ; tarsi and fore tibiae blatkish. Male. AntennaB with black 

 plumes. 



Not rare. (E.) 



118. pervulsus, n. Mas, niger, validiusculus, alis limpidis basi 

 nigricantibus, venis et halteribus albidis, pedibus obscure fuscis sat ro- 

 bustis. Long. 1^-2 ; alar. 2-^-4 lin. 



Male. Black, rather stout. Antennae with black plumes. Wings 

 limpid, blackish at the base; veins and halteres whitish. Legs dark 

 broicn, rather stout. 



Not common. (E.) 



119. inscendens, n. Mas et Fcem. niger, validiusculus, alis albo- 

 limpidis, venis et halteribus albis, tibiis posterioribus albidis basi apiceque 

 nigris. Long. 2-|- ; alar. 4 lin. 



Male and Fern. Black, rather stout. Wings limpid-white ; veins and 

 halteres white. Legs moderately long ; posterior tibice whitish, black at 

 the base and at the tips. Male. Antennae with black plumes. 



Not common. (E.) 



120. excerptus, n. Mas, niger, alis subcinereis, venis albidis apud 

 costam fuscis, halteribus testaceis, femoribus piceis basi testaceis. Long. 

 1^ ; alar. 2 lin. 



Male. Black. Antennae with black plumes. Wings slightly greyish ; 

 costal, radial, and cubital veins, and discal transverse veinlet brown, the 

 other veins whitish. Halteres testaceous. Legs black ; femora piceous, 

 testaceous at the base. 



Rare. (E.) 



121. nactus, n. Mas, niger, alis subcinereis, venis albidis, halte- 

 ribus albis, pedibus nigricantibus. Long. 1^-2 ; alar. 2f 3 lin. 



Male. Black. Antennae with black plumes. Wings greyish ; veins 



