CHIUONO.MUS. 187 



157. lucens? Zett. D. Sc. ix. 3574. 102 {I860).— lucidm, Staeg. 

 Mas, niger, validus, alia albidis basi nif/ricanlibus, venis albis, halteribus 



fuscis, petlibus piceis validiiisculis. Long. 3 ; alar. 4 liu. 



Male. Black, .stout, pubescent. Antennae with black plumes. JFiuf/s 

 ivhitkh, blackish at the fiase ; veins white. Halteres brown. Leys piceous, 

 pubescent, rather stout. 



Rare. (E.) 



158. minutus? Zett. 1). S. ix. 3522. 39 (1850). F(eiu. niger, 

 (dis limpidis, ceuis halteribusque albidis, illis apud costam testaceis, pedibus 

 testaceis, tarsis fuscescentibus. Long, f ; alar. 1\ lin. 



Fem. Black. IFinys limpid ; costal, radial, and cubital veins testa- 

 ceous, the rest whitish. Halteres whitish. Legs dull testaceous; tarsi 

 brownish. 



Rare. (E.) 



159. opplens, n. Mas, niger, thorace nitente, alis sublhnpidis, 

 venis halteribusque albidis, illis apnd costam testaceis, pedibus niyrican- 

 tibus. Long. 1-2—2; alar. 3-3^ lin. 



Male. Black. Antennae with black plumes. Thorax shining. TFings 

 nearly limpid ; costal, radial,- and cubital veins testaceous, the rest whitish. 

 Halteres whitish. Leys blackish, long, slender. 



Not rare. (E.) 



160. plebeius? Meg. ; Meig. Zw. i. 40. 44 (1818). Var.? Fcem. 

 niger, alls Umpidis, venis halteribusque albidis, illis apud costam fuscis, 

 pedibus pallide fuscis, metatarsis anticis albidis aj/ice fuscis. Long. 2 ; 

 alar. 4 lin. 



Var.? Fem. Black. IFinys limpid; costal, radial, and cubital veins 

 brown, the rest whitish. Halteres whitish. Leys pale broicn ; tarsi and 

 tips of the femora and of the tibia darker ; fore metatarsi whitish, except 

 at the tips. 



Rare. In the British Museum. (E.) 



161. nitidicollis, Steph. MSS. Mas, niger, thorace nitente, alis 

 albo-limpidis, venis albis, halteribus fuscis, pedibus ferruyineis pubescen- 

 tibus. Long. 2 ; alar. 3 lin. 



Male. Black. Antenna) witli black plumes. Thorax shining. IFinys 

 limpid -white ; veins lohite. Halteres broion. Leys ferruyinous, pubes- 

 cent. 



Rare. In the British Museum. (E.) 



163. pergens, n. Mas, canus, thorace vittis tribus nigTis, alis 

 subcinereis, venis albidis apud costam fuscis, halteribus albis, abdomine 

 nigro subtus cinereo, pedibus fulvis, tibiis apice tarsisque nigris. Long. 

 2^ ; alar. 4 lin. 



Male. Hoary. Antenna^ with black plumes. Thorax with three 

 black stripes. IFinys yreyish ; costal, radial, and cubital veins, and 

 discal transverse veinlet broicn, the other veins whitish. Halteres white. 



