620 PROCEEDINGS OF THE NATIONAL MV8EVM. vol. 37. 



Willistoniella Mik, Wien. Ent. Zeit, vol. 14, p. 136, 1895. Change of name for 

 Rhopalomyia Williston, 1895, not of Rubsaamen, 1892. Type, Ropalomera pleuro- 

 punctafa Wiedemann. Syn., Rhopalomyia Williston, 1895, preoccupied. 



Winnertzia Rondani, Atti Soc. Ital. Sci. Nat. Milano, vol. 2, p. 287, 1860. 1 

 species. Type, Asynapta luguhris Winnertz. 



Winthemia Desvoidy, Essai Myod., p. 173, 1830. 3 species (as 8). Type, Musca 

 quadripvstulaia Fahkicius (as species 2 to 4 and 6 to 8), by designation of Desvoidy, 

 Hist. Nat. Dipt., vol. 1, 1863, p. 207. Syn., Dorbina Desvoidy, 1847; Masipoda 

 Br.\uer and Bekcenstaiim, 1889; Catagonia Bkaukr and Bergenstamm, 1891. 



Wohlfalniia Bkauek and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 56, 

 p. 123, 1889. 2 species. Type, Sarcophila magnifica Sciiiner, the first species, by 

 designation of Brauer and Bergenstamm, Verb. Zool.-Bot. Ges. Wien, vol. 43, 

 1893, p. 501. Equals Sarcophila Rondani, 1856. 



Wulpia Brauer aud Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 60, p. 

 128, 1893. 1 species. Type, Walpia aperta Brauer and Bergenstamm. Not Wulpia 

 Bigot, 1S86. Equals Vanderwulpia Townsend, 1891. 



^A^yeomyia Theobald, Journ. Trop. Med., vol. 4, p. 235, July 15, 1901. No species. 

 In his Monogr. Culic, vol. 2, November 23, 1901, p. 268, 6 species. Type, Wyeomyia 

 grayii Theobald, the first species, by designation of Neveu-Le.maire, Mem. Soc. 

 Zool. France, vol. 15, 1902, p. 223. 



Xanionotum Brues, Amer. Nat., vol. 36, p. 376, 1902. 1 species. Type, Xanionotum 

 hystrix Brues. 



Xanthandrus Verrall, Brit. Flies, vol. 8, p. 316, 1901. 5 species. Type, Musca 

 cornia Harris, the first species, by present designation. 



Xanthina Aldrich, Kansas Univ. Sci. Bull., vol. 1, p. 92, 1902. 1 species. Type, 

 Xa)itliiii(t. jilumicauda Aldrich. 



Xanthochlorus LoEw, Neue Beitr., vol. 5, p. 42, 1857. 2 species. Type, Porphy- 

 rops onnitiis Haliday, the first species, by present designation. Syn., Leptopus 

 Haliday, 1831, preoccupied. 



Xanthocrona Wulp, Biol. Centr.-Amer., Dipt., vol. 2, p. 392, 1899. 1 species. 

 Type, Xanthocrona hipushdata Wulp. 



Xanthodexia Wulp, Biol. Centr.-Amer., Dipt., vol. 2, p. 256, 1891. 1 species. 

 Type, Tacliina cinerea Wiedemann. 



Xanthogramma Schiner, Wien. Ent. Monatschr., vol. 4, p. 215, 1860. No species. 

 In his Fauna Austr., Dipt., vol. 1, 1862, p. 319, 3 species. Type, Musca pedissequua 

 Harris (as SyrpJius ornaius Meigen), the second species, by designation of Williston, 

 Synop. N. Amer. Syrph., 1'886, p. 91. 



Xanthomelana Wulp, Tijdschr. Ent, vol. 35, p. 188, 1892. 6 si)ecies. Type, 

 Xa)iUiornelana gradlenta Wulp, the fifth species, by present designation. Syn., 

 Xanthomelanodes Townsend, 1893. 



Xanthomelanodes Townsend, Can. Ent., vol. 25, p. 167,1893. Cliange of name for 

 Xanthomelana Wulp, 1892, under the mistaken impression that the latter is preoc- 

 cupied by A'an//(0»(e/oH Martens, 1860, or by A'(m</(o/He/(m<'c Bonaparte, 1 850 (a descrip- 

 tive term for a color-group in the genus Enplectea). Type, XantJiomelana gradlenta 

 Wulp. Equals Xanthomelana Wulp, 1892. 



Xardhotricha Aldrich, Trans. Ent. Soc. Lond. for 1896, p. 339, 1896. 3 species. 

 Type, Xantholriclia cupulifera Aldrich, the first species, by })resent designation. 

 E(juals Thrypticus Gerst.ecker, 1864. 



Xenochaeta Snow, Kansas Univ. Quart., vol. 2, p. 166, 1894. 1 species. Type, Xeno- 

 ch:i'ta dicliromata Snow. 



Xenomyza Wiedemann, Zool. Mag., vol. 1, j)t. 1, p. 60, 1817. 2 species. Type, 

 Darmdis planiceps Fabricius, the first species, by present designation. Syn., Chalci- 

 dimorpha Westwood, 1835. 



