OF WASHINGTON. 249 



Dysaletria Loew, Zeitsch. Ent. Breslau, xiv, 7, 1860. 

 (= Platypalpus Macquart, 1827. 



Type : Tachypeza atriceps Boheman. 



Loew described one species, Tachypeza melanocephala^ which he 

 credited to Boheman, but it is evident from his references as well as from 

 his description that the name melanocephala is an error for atriceps. 

 This has already been pointed out by Roder.* 



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

 86, 1827. 



Type : Tachydromia ephippiata Fallen. 



Work not seen by the writer, but Macquart laterf mentions only one 

 species in this genus, Tachydromia ephippiata Fallen. 



Empimorpha Coquillett, Proc. U. S. Nat. Mus., xvm, 396, 

 June, 1896. 



Type : Empimorpha comantis Coquillett. 

 Designated the above species as the type. 



Ernpis Linne, Syst. Natur., Ed. 10, 603, 1758. {Platypterygia 

 Stephens, 1829; Eriogaster Macquart, 1838; Enoplempis 

 Bigot. iSSo; Sieteocheta'Becktt, 1887.) 



Type : Empis pennipcs Linne. 



Linne described three species as new, E. borealis, pennipes and livida. 

 LatreilleJ designated as the type Empis pennipes Fabricius (= Linne). 



Enicopteryx Stephens, Syst. Cat. Brit. Ins., 264, 1829. (= 

 Macrostomus Wiedemann, 1817.) 



Type : Rhamphomyia infuscata Meigen. 



Stephens listed three species, Empis fuscafo manuscript name), Rham 

 phomyia infuscata Meigen, and hyalinipennis, new species (with Rham 

 phomyia anomalipennis Meigen as its synonym). Westwood designated 

 Rhamphomyia i/ifuseata Meigen as the type. 



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

 iSSo (= Empis Linne, 1758). 

 Type : Enoplempis mira Bigot. 

 Bigot described only one species as new, E. mira. 



Eriogaster Macquart, Dipt. Exot., I, Part 2, 162, 1838; not 

 ofGermar, 1811. (= Empis Linne, 1758.) 

 Type : Empis laniventris Eschscholtz. 

 Macquart designated the above species as the type of this genus. 



* Wiener Ent. Zeit.. in. 291, Dec. 15, 1884. 

 f Hist. Nat. Dipt., i, 359, 1834. 

 J Consid. Gen., 443, 1810. 

 Introd., II, Synop., 131, 1840. 



