556 PROCEEDING.^ OF THE \ATIOXAL MUSEUM. vol.37. 



Ischnomyia LoEW, Berliner Ent. Zeitschr. , vol. 7, p. 325, 1863. 1 species. Type, 

 Diastataf albicostn Walker (as vittula, new species). 



Isogaster Lioy, Atti Inst. Veneto, ser. 3, vol. 9, p. 1114, 1864. 1 species. Type, 

 Borhorus nigrifemoratus Macquart. Equals Copromyza Fallen, 1810. 



Isoglossa Coquillett, Can. Elnt., vol. 27, p. 125, 1895. 1 species. Type, Isoglossa 

 haslatn Coquillett. Not Iftoglossa Casey, 1893. Equals Eucoronymyia Townsend, 

 1908. 



Isomera Desvoidy, Ann. Soc. Ent. France for 1851, p. 315, 1851. 2 species. Type, 

 Rhedia sinda Desvoidy (as Reaumervt l/lun<kli Desvoidy) , the first species, by present 

 designation. E<juals Salmacia Meigen, 1800. 



Jsopenilies Osten Sacken, Biol. Centr.-Amer., Dipt., vol. 1, p. 96, 1886. 2 species. 

 Type, Isopenthes jivnnickeann Osten Sacken, the second species, by i)resent designa- 

 tion. Equals Villa Lioy, 1864. 



Isoplastus Skuse, Proc. Linn. Soc. N. S. Wales, ser. 2, vol. 4, p. 279, 1889. 

 3 species. Type, Isoplastus notahilis Skuse, the tirst species, by present designation. 



Isostomyia Coquillett, Class. Mosq., p. 16, 1906. 1 species. Type, Ardes pertur- 

 bans WiLLisTON. 



Isioglossa Rondani, Dipt. Ital. Prodr., vol. 1, p. 77, 1856. 1 species. Type, Isto- 

 glossn puella Rondani. E(]uals Clausicella Rondani, 1856. 



Itamns Loew, Linn. Ent., vol. 4, p. 84, 1849. 4 species. Type, Asilus cgainmis 

 LoEW, the first species, by present designation. Not Itamus Sciimidt-G(ebel, 1846. 

 Equal.s Neoitamus Osten Sacken, 1878. 



Iteaphila Zettekstedt, Ins. Lapp., p. 540, 1838. 2 species. Type, Iteaphila 

 macquarii Zetterstedt, the first species, by designation of Coquillett, Proc. Ent. Soc. 

 Washington, vol. 5, 1903, p. 251. Syn., Steleocheta Becker, 1887. 



Itonida Mekjen, Nouv. Class. Mouch., p. 19, 1800.* No species. Cecidomyia 

 Meigen, 1803, is a change of name. Type, Tipnla pin! De Geer. Syn., Cecidomyia 

 Meigen, 1803; Diplosis Loew, 1851. 



Janetiella Kieffer, Syn. Cec. Eur. Alger., p. 23, 1898. 3 species. Type, Cecido- 

 myia tliipni Kieffer, the first species, by ])resent designation. 



Janthinosoma Arribalz/vGA, Rev. Mus. La Plata, vol. 1, p. 394, 1891. 1 species. 

 Type, Ctdex discrncians Walker. Syn., Concliyliastes Theobald, 1901. 



Javetia Desvoidy, Hist. N'at. Dipt., vol. 1, p. 1115,1863. 1 species (as 3). Type, 

 Tackina chalconola Meigen. Equals Macquartia Desvoidy, 1830. 



Joannisia Kieffer, Bull. Soc. Ent. France for 1894, p. 175, 1894. 2 species. Tyi)e, 

 Joanvisia axirantiaca Kieffer, the first species, by present designation. 



Johlotia Blanch ard, Compt. Rend. Soc. Biol., vol. 53, p. 1046, Dec. 6, 1901. Change 

 of name for Trichojirosopoti Theobald, July 15, 1901, under the mistaken idea that 

 this is preoccupied by Trichnprosopus Macquart, 1843. Type, TricJioprosopon niripes 

 Theobald. Equals Trichoprosopon Theobald, July 15,1901. 



Johannseniella Williston, Tourn. N. Y. Ent. Soc, vol. 15, p. 1, 1907. Change of 

 name for Ceratoloplms Kieffer, 1899, not of Bocoukt, 1873. Type, Ceralopogon femo- 

 raia Meigen. Equals Serromyia Meigen, 1818. 



Johnsonia Coquillett, Proc. Acad. Nat. Sci. Phila. for 1895, p. 316, 1895. 1 species. 

 Type, Julinsoniu elegans Coquillett. 



Johnsonomyia Felt, 23d Rep. State Ent. N. Y., p. 417, 1908. 3 species. Type, 

 Johnsonomyia riilmi Felt, the last species, by original designation. 



Jurinella Brauek and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 56, 

 p. 132, 1889. 1 species. Type, Jurinia caruleonigra .Macquart. Syn., Pseudohystrida 

 Brauer and Bergenstam.m, 1889; Enjurinia To\v>:send, 1908. 



Jurinia Desvoidy, Essai Myod., p. 34, 1830. 10 species (as 12). Type, Jurinia 

 gagatra Desvoidy, the fifth species, by present designation. 



Karshomyia Felt, 23d Rep. State Ent. N. Y., p. 398, 1908. 1 species. Type, 

 Mycodiplosis viburni Felt. 



