568 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



U Meroplius Rondani, Bull. Soc Ent. Ital., vol. 6, p. 170, 1874. 1 species. Type, 



Nemopoda stercoraria Desvoidy. Equals Nemopoda Desvoidy, 1830. 

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



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

 •^ Mesembrina Meigen, Syst. Beschr. Zweifl. Ins., vol. 5, p. 10, 1826. 2 species. 

 Type, Musca meridiana Linnaeus, the first species, by designation of Westwood, 

 Intr., vol. 2, Synops., 1840, p. 141. Syn., Metamesembrina Townsend, 1908. . 

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



1893. 1 species. Type, Mesembrinella bicolor Giglio-Tos. 

 ^ Mesembrius Rondani, Dipt. Ital. Prodr., vol. 2, p. 50, 1857. 1 species. Type," 



Helophilns peregrinus Loew. Equals Helophilus Mek;en, 1822. 

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

 Syrphns gurgus Walker (as parvula, 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 mistaken idea that the latter is preoccupied by a 

 genus of plants. Type, Syrphus gurges Walker. Equals Toxomerus Macquart, 

 1855. 

 */ Mesophila Walker, List Dipt. Brit. Mus., vol. 4, p. 1157, 1849. 1 species. Type, 



Ceratophya fuscipennis Macquart. Equals Microdon Meigen, 1803. 

 *y Mesorhaga Schiner, Reise 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, Tachina helymus Walker (as atra, new species). 

 "^ Metachela Coquillett, Proc. P]nt. Soc. Washington, vol. 5, p. 253, 1903. 1 species. 

 Type, Hemerodromia collusor Melanoer. 



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

 Type, Metacosmus exilis Coquillett. 

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

 Type, Metadexia tricolor Coqrn.LETT. 

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

 Meiadiplosis spinosa Felt. 



Metadoria Bracer and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 60, 

 p. 117, 1893. 1 species. Type, Phorocera barbata 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.eus. Equals Mesembrina Meigen, 1826. 



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

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

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



Type, Xestomyza planiceps Loew. 

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



genalis Coquillett. 

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

 Type, Metaplagia occidentalis 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, 

 Scenopinus bulbosus Osten Sacken. 



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

 Hyposteiia barbata Coquillett. Equals Tachinophyto Townsend, 1892. 



y 



