568 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



MeropUns Roxdani, Bull. Soc. Ent. Ital., vol. 0, p. 170, 1874. 1 species. Type, 

 Nemopoda stercoraria Desvoidy. Equals Nemopoda Desy'^oidy, 1830. 



Merosargus Loew, Verb. Zool.-Bot. Ges. Wien, vol. 5, p. 144, 1855. 4 species. 

 Type, Sargus obscurus Wiedemann, the third species, by original designation. 



Mesembrina Meigen, Syst. Bescbr. Zweifl. Ins., vol. 5, p. 10, 1826. 2 species. 

 Type, Musca meridiana Linn.eus, the first species, by designation of Westwood, 

 Intr., vol. 2, Synops., 1840, p. 141. Syn., MciatitesembrinaTowNHESD, 1908. 



Mesembrinella GroLio-Tos, Boll. Mus. Zool. Univ. Torino, vol. 8, No. 147, p. 4, 

 1893. 1 !^pecit'.<. Type, Meseinbriiiella bicolor Gigl\o-Tos. 



Mesembrius Rondani, Dipt. Ital. Prodr., vol. 2, p. 50, 1857. 1 specie.'!. Type, 

 HelopJdlus peregrinus Loew. Equals Helophilus MEiciEN, 1822. 



Mesogramma Loew, Berliner Ent. Zeitschr., vol. 9, p. 157, 1865. 12 species. Type, 

 Syrphus gurgus Walker (as pnrvula, new species) , the first species, by designation of 

 Williston, Synops. N. Amer. Syrph., 1886, p. 98. Equals Toxomerus Macquart, 

 1855. 



Mesograpta Loew, Berliner Ent. Zeitschr., vol. 16, p. 290, 1872. Change of name for 

 Mesogramma Loew, 1865, under the mi^^taken idea that tbe latter is preoccupied by a 

 genus of plants. Type, Syrphuit gurges AValkek. Equals Toxomerus Macquart, 

 1855. 



Mesuphila Walker, List Dipt. Brit. Mus., vol. 4, p. 1157, 1849. 1 species. Type, 

 Ceratophya fuscipennis Macquart. Equals Microdon RIeigen, 1803. 



Mesorhaga Schiner, Raise Norara, Zool., vol. 2, Dipt., p. 217, 1868. 1 species. 

 Type, Mesorhaga tristis Schiner. Syn., Aplorthus Aldrich, 1893. 



Messala Curtis, Brit. Ent., p. 581, 1836. 1 species. Type, Macrocera hybrida 

 Meigen (as saundersii, new species). Equals Bolitophila Meigen, 1818. 



Metachaeta Coquillett, Journ. N. Y. Ent. Soc, vol. 3, p. 98, 1895. 1 species. 

 Type, T((china helymus W^vlker (as a(ra, new species). 



Metachela Cocjuillett, Proc. Ent. Soc. Washington, vol. 5, p. 253, 1903. 1 species. 

 Type, Hemerodromia coUusor Melanokr. 



Metacosmus Coquillett, West. Amer. Sci., vol. 7, p. 220, 1891. 1 species. 

 Type, Metacosmus exilis Coquillett. 



Metadexia Coquillett, Journ. N. Y. Ent. Soc, vol. 7, p. 220, 1899. 1 species. 

 Type, Metitdexia tricolor Coquillett. 



Metadiplosis Felt, 23d Rep. State Ent. N. Y., p. 406, 1908. 1 species. Type, 

 Meladiplosis s})lnosa Felt. 



Metadoria Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. W^ien, vol. 60, 

 p. 117, 1893. 1 species. Type, Phorocera tmrJiata Bigot (as mexicana, new species). 

 Syn., Hemiargyra Townsend, 1908. 



Metamesembrina Townsend, Smiths. Misc. Coll., vol. 51, p. 50, 1908. 1 species. 

 Type, Musca meridiana Linn^us. Equals Mesembrina Meigen, 1826. 



Metapelastonenrus Aldrich, Kansas Univ. Quart., vol. 2, p. 152, 1894. 1 species. 

 Type, Metiipelastonearus kansensis Aldrich. Equals Pelastoneurus Loew, 1861. 



Metaphragma Coquillett, Journ. N. Y. Ent. Soc, vol. 2, p. 97, 1894. 1 species. 

 Type, Xestomyzn planiceps Loew. 



Metaphyto Coquillett, Rev. Tach., p. 36, 1897. 1 species. Type, Metaphyto 

 genalis Coquillett. 



Metaplagia Coquillett, Journ. N. Y. Ent. Soc, vol. 3, p. 102, 1895. 1 species. 

 Type, Metaplagia occidenialis Coquillett. 



Metapogon Coquillett, Proc. Ent. Soc. Washington, vol. 6, p. 181, 1904. 2 spe- 

 cies. Type, Metapogon gilvipes Coquillett, the first species, by original designation. 



Metatrichia Coquillett, Ent. News., vol. 11, p. 500, 1900. 1 species. Type, 

 Scenopinits bidboxus Osten Sacken. 



Methypostena Townsend, Smiths. Misc Coll., vol. 51, p. 67, 1908. 1 species. Type, 

 Hypostena barbala Coquillett. Equals Tachinophyto Townsend, 1892. 



