592 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



Platychira Rondani, Dipt. Ital. Prodr., vol. 1, p. 64, 1856. 1 species. Type, Musca 

 puparum Fabricils. Equals Meriania Desvoidy, 1830. 



Platycnema Zetterstedt, Ins. Lapp., p. 334, 1838. 1 species. Type, Einpis puli- 

 cario Fallen. Equals Atelestus Walker, 1837. 



Platycoenosia Strobl, Wien. Ent. Zeit., vol. 13, p. 72, 1894. 1 species. Type, 

 Platyccc7iosia 7nikii STROBh. Syn., ChoristommaSTEiv, 1895. 



Platynochaetus Wiedemann, Auss. Zweifl. Ins., vol. 2, p. 147, 1830. 1 species. 

 Type, Si/rphus setosus Fabricius. 



Platypalpus Macquart, Ins. Dipt. Nord France, Separata, p. 92, 1827. 18 species. 

 Type, Musca cttrsitans Fabricius, the fourteenth species, by designation of West- 

 wood, Intr., vol. 2, Synops., 1840, p. 132. 



Plati/pt'za Meigen, Illiger's Mag., vol. 2, p. 272, 1803. No species. In his Klass. 

 Beschr. Zweifl. Ins., 1804, p. 310, 3 species. Type, Platypeza fasciata Meigen, the 

 first species, by designation of Rondani, Dipt. Ital. Prodr., vol. 1, 1856, p. 139. 

 Equals Clythia Meigen, 1800. 



Platyptera Meigen, Illiger's Mag., vol. 2, p. 269, 1803. 2 species. Type, Empis pla- 

 typtera Panzer, the second species, by tautonymy. Equals Dionnaea Meigen, 1800. 



Platypterygia Stephens, Syst. Cat. Brit. Ins., vol. 2, p. 263, 1829. 1 species. Type, 

 Empis borealis Linn^xis. Equals Empis Linn^us, 1758. 



Platystoma Meigen, Illiger's Mag., vol. 2, p. 277, 1803. 1 species. Type, Musca 

 se7ninailonisLiiiT^MVs. Syn., Ilesyquillia Desxoidy, 1830; MegaIoglossa'RoT<iDA'si, 1869. 



Platyura Meigen, Illiger's Mag., vol. 2, p. 264, 1803. No species. In his Klass. 

 Beschr. Zweifl. Ins., 1804, pp. 101, 102, 5 species. Type, Platyura fasciata Meke-s, 

 the second species, by designation of Zetterstedt, Dipt. Scand., vol. 10, 1851, p. 4077. 

 Equals Zelmira Meigen, 1800. 



Plaxemya Desvoidy, Essai Myod., p. 392, 1830. 1 species. Type, M sea vitri- 

 pennis Meigen (as sugillairix, new species). Equals Musca Linn^us, 1758. 



Plecia Wiedemann, Auss. Zweifl. Ins., vol. 1, p. 72, 1828. 6 species. Type, 

 Hirtea fulvicollis Fabricius, the second species, by designation of Blanchard, Hist. 

 Nat. Ins., vol. 3, 1840, p. 576. Syn., Rhinoplecia Bellardi, 1859. 



Plectops Coquillett, Rev. Tach., p. 57, 1897. 1 species. Type, Plectops melis- 

 sopodis Coquillett. 



Plectromyia Osten Sacken, Monogr. Dipt. N. Amer., vol. 4, p. 282, 1869. 1 species. 

 Type, Plectromyia modesta Osten Sacken. 



Pkctropus Haliday, Zool. Journ., vol. 5, p. 353, 1831. 3 species. Type, Musca 

 paUipes Fabricius, the first species, by designation of Westwood, Intr., vol. 2, 

 Synops., 1840, p. 134 (as pallidus Meigen). Not Pkctropus Kirby, 1826. Equals 

 Syntormon Loew, 1857. 



Plesiastina Winnertz, Ent. Zeit. Stettin, vol. 13, p. 55, 1852. 1 species (as 2). 

 Type, Mycefohia annulata Meigen. Equals Symmerus Walker, 1848. 



Plesiomma Macquart, Dipt. Exot., vol. 1, pt. 2, p. 54; 1838. 2 species. Type, 

 Plesiomma testacca Macquart, the first species, by designation of Back, Trans. Amer. 

 Ent. Soc, vol. 35, p. 306, 1909. 



Plethochaeta Coquillett, Proc. U. S. Nat. Mus., vol. 23, p. 613, 1901. 1 species. 

 Type, PktlLochicta varicolor Coquillett. 



P/ettusa Philippi, Verb. Zool.-Bot. Ges. Wien, vol. 15, p. 597, 1865. 4 species. 

 Type, Plettusa virescens Philippi, the first species, by present designation. Equals 

 Geranomyia Haliday, 1833. 



Plinthina Walker, Ins. Saund., Dipt., p. 10, 1850. 1 species. Type, Pangonius 

 macroporum Macquart. Equals Pangonius Latreille, 1802. 



Ploas Latreille, Hist. Nat. Crust, et Ins., vol. 14, p. 299, 1805. 1 species. Type, 

 Bomhylius viresceiis Fabricius (as hirlicornis, new species). Equals Conophorus Mei- 

 gen, 1803. 



