no. 1719. TYPE-SPECIES OF AMERICAN DIPTERA—COQUILLETT. 621 



[Xiphandrium Loew, Neue Eeitr.,vol. 5, p. 36, 1857. 9 species. Type, Rkaphium 



quadrifilum Loew, the first species, by present designation. Equals Rhaphium 



Meigen, 1803. Not American.] 

 I Xiphidicera Macquart, Hist. Nat., Dipt., vol. 1, p. 356, 1834. 1 species. Type, 



Xiphidicera rufipes Macquart. Equals CEdalea Meigen, 1820. 

 / Xiphura Brulle, Ann. Soc. Ent. France for 1832, p. 206, 1832. 1 species (as 2). 



Type, Tipula alrata Linnjeus. Equals Flabellifera Meigen, 1800. 

 / Xylocrypta Kieffer, Bull. Soc. Ent. France for 1899, p. 69, 1899. 1 species. Type, 



Ceratopogon fasciata Meigen. Equals Sphaeromias Curtis, 1829. 

 ff. Xylomya~RoxD ani, Dipt. Ital. Prodr., vol.4, p. 11, 1861. Change of name for Subula 



Miegen, 1820, not of Schumacher, 1817. Type, Xylophagus maculatus Meigen. 



Equals Solva Walker, 1860. 

 >/ ^XyJuaIiU3]: ls Meigen, Illiger's Mag., vol. 2, p. 266, 1803. 1 species. Type, Nemotelus 



ductus De Geer. Equals Erinna Meigen, 1800. 

 i/ _Aji£fliaJtfEiGEN, Syst. Beschr. Zweirl. Ins., vol. 3, p. 211, 1822. 16 species. Type, 



Musca segnis Linnaeus, the ninth species, by designation of Curtis, Brit. Ent., 1832, p. 



409. Equals Zelima Meigen, 1800. 

 / Xylotachina Brauer andBERGENSTAMM, Denkschr. Kais. Akad. Wiss. Wien, vol. 58, 



p. 342, 1891. 1 species. Type, Xylotachina ligniperdse Brauer and Bergenstamm. 



Equals Sturmia Desvoidy, 1830. 

 / Xylotuja Rondani, Nuovi Ann. Sci. Nat. ( Bologna) for 1844, p. 457, 1844. 1 species. 



Type, Syrphus varus Panzei;. Equals Myolepta Newman, 1838. 

 </ Yetodesia Rondani, Dipt. Ital. Prodr., vol. 4, p. 9, 1861. Change of name for Aricia 



Desvoidy, 1830, not of Savigny, 1817. Type, Musca impuncta Fallen. Equals 



Mydaea Desvoidy, 1830. ( Yetodesia, of authors equals Phaonia Desvoidy.) 

 S Youngomyia Felt, 23d Rep. State Ent. N. Y., p. 398, 1908. 2 species. Type, 



Dicrodiplosis podophyllre Felt, the first species, by original designation. 

 * Yposatcea Rondani, Dipt. Ital. Prodr., vol. 1, p. 198, 1856. No species. Genus 



formed of Lestremia Macquart, Zygonema Meigen, and Mimosciara Rondani. Type, 



Mimosciara molobrina Rondani (the type of Mimosciara), by present designation. 

 - Equals Lestremia Macquart, 1826. 

 </ Zabrachia Coquillett, Bull. 47, N. Y. State Mus., p. 585, 1901. 1 species. Type, 



Zabrachia polita Coquillett. 

 / Zacompsia Coquillett, Ent. News., vol. 12, p. 15, 1901. 1 species. Type, Zacomp- 



siafulva Coquillett. 

 </ Zagonia Coquillett, Invert. Pacif., vol. 1, p. 27, 1904. 1 species. Type, Zagonia 

 yflara Coquillett. Syn., Siligo Aldrich, 1908. 



Zaphne Desvoidy, Essai Myod., p. 527, 1830. 1 species (as 2). Type, Anthomyia 



divisa Meigen. ^***' 



* Zelia Desvoidy, Essai Myod., p. 314, 1830. 5 species. Type, Dexia vertebrata Say 

 (as rostrata, new species), the first species, by present designation. 



* Zelima Meigen, Nouv. Class. Mouches, p. 34, 1800.* No species. Eumeros Meigen, 

 1803, is a change of name. Type, Musca segnis Linnaeus. Syn., Eumeros Meigen, 

 1803; Heliophilus Meigen, 1803; Xylota Meigen, 1822; Micraptoma Westwood, 1840. 



* Zelinda Desvoidy, Hist. Nat. Dipt., vol. 1, p. 485, 1863. 1 species. Type, Musca 

 libatrix Panzer (as aurulenta, new species) . Equals Zenilla Desvoidy, 1830. 



/ Zelleria Desvoidy, Hist. Nat. Dipt., vol. 1, p. 985, 1863. 1 species (as 19). Type, 

 / Tachina simulans Meigen. Equals Exorista Meigen, 1803. 



Zelmira Meigen, Nouv. Class. Mouches, p. 16, 1800.* No species. Platyura Mei- 

 gen, 1803, is a change of name. Type, Platyura fasciata Meigen. Syn., Platyura 

 Meigen, 1803. 

 V Zenillia Desvoidy, Essai Myod., p. 152, 1830. 2 species (as 3). Type, Musca liba- 

 trix Panzer, the second species, by designation of Desvoidy, Hist. Nat. Dipt., vol. 1, 

 1863, p. 471. Syn., Nilea Desvoidy, 1863; Atilia Desvoidy, 1863; Clemelis Desvoidy, 



