OF WASHINGTON. 253 



Rondani designated as the type Hemerodromia tnonoftigma Hoffmann- 

 segg (= Meigen). This is given as a synonym of Tachydromia pi cecatoria 

 Fallen by Schiner* and by Loew.t 



Megacyttarus Bigot, Ann. Soc. Ent. France. Bull., XLVII. 

 1880. (= Macrostomus Wiedemann, 1817*) 



Type : Rhamphomyia limbata Loew. 



Bigot described one species as new, M. argenteus ; this is identical with 

 Rhamphomyia limbata Loew according to Coquillett. % 



Meghyperus Loew, Stett. Ent. Zeit., xi, 303, Sept., 1850. 

 Type : Meghyperus sudeticus Loew. 

 The above was the only species mentioned. 



Metachela Coquillett, new genus. 



Type : Hemerodromia collusor Melander. 



Microcera Zetterstedt, Ins. Lappon., 572, 1838 ; not of Meigen, 

 1803. nor of Mannerheim, 1830. (= Heleodromia Halidav, 



1833-) 



Type: Heleodromia immaculata Haliday. 



Zetterstedt described one species as new, M. rostrata, identical with 

 Hcleodromia immaculata Haliday according to Walker, and repealed by 



Schiner. || 



Microcyrta Bigot, Ann. Soc. Ent. France, 557, 1857. ( == 

 Platytelma Rondani, 1856.) 



Type: Cyrtoma pallipes Meigen. 

 The above is the only species referred to by Bigot. 



Microdromya Bigot, Ann. Soc. Ent. France, 557, 1857* 

 (= Hemerodromia Meigen, 1822. 



Type: Tachydromia oratoria Fallen. 



Bigot mentioned no species, but the characters he gave must, in all 

 probability, have been drawn from the above species. 



Microphorus Macquart, Ins. Dipt. Nord France, Separata, 

 14, 1827. 



Type : Microphorus velutinus Macquart. 



Work not seen by the writer. Rondanif designated as the type Micro- 

 phorus velntinns Macquart, the second species described by Macquart. 



Mythicomyia Coquillett, Ent. News, 208, June, 1893. 

 Type : Mythicomyia rileyi Coquillett. 



* Faun. Aus., Dipt., i, 83. 



t Wiener Ent. Monat., vin, 238. 



J Proc U. S. Nat. Mus., xvm, 388, June, 1896. 



$ Ins. Brit., Dipt., i, 107. 



|| Faun. Aus., Dipt., i. 86. 



Ital. Prod., i, 151, 1856. 



