532 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



Desmatoneura Williston, Kansas Univ. Quart., vol. 3, p. 267, 1895. 1 species. 



Type, Desmatoneura argeyitifrons Williston. 



Desmometopa Loew, Berliner Ent. Zeitschr., vol. 9, p. 185, 1865. 2 species. Type, 

 Agromyza m-atrum Meigen, the second species, by designation of HiSNDEL, Wien. 

 Ent. Zeit., vol. 22, 1903, p. 251. Syn., Macrurus Lioy, 1864, preoccupied. 



Dexia Meigen, Syst. Beschr. Zweifl. Ins., vol. 5, p. 33, 1826. 24 species. Type, 

 Musca rustica Fabricius, the twenty-second species, by designation of Westwood, 

 Intr., vol. 2, Synops,, 1840, p. 140. Syn., Z)m/to Westwood, 1840; /da Desvoidv, 1863. 



Dexilla Westwood, Intr., vol. 2, Synops., p. 140, 1840. 1 species. Type, Musca 

 rustica Fabricius. Equals Dexia Meigen, 1826. 



Dexiopsis PoKORNY,Verh. Zool.-Bot. Ges. Wien, vol. 43, p. 533, 1893. 1 species. 

 Type, Aricia, lacteipennis Zetterstedt. 



Dexiosoma Rondani, Dipt. Ital. Prodr., vol. 1, p. 85, 1856. 1 species. Type, 

 Musca canina Fabricius. 



Dexodes Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 56, p. 

 87, 1889. 1 species. Type, Tachina albisquama Zeiterstedt (as spectabUis Meigen). 

 Equals Lydella Desvoidy, 1830. 



Diabasis Macquart, Hist. Nat., Dipt., vol. 1, p. 207, 1834. 4 species. Type, 

 Tabanus biclnctus Fabricius, the first species, by present designation. Not Diabasis 

 HoFFMANNSEGG, 1819. Equals Diachlorus Osten Sacken, 1876. 



Diachlorus Osten Sacken, Mem. Boston Soc. Nat. Hist., vol. 2, p. 475, 1876. 

 Change of name for Diabasis Macquart, 1834, not of Hoffmannsegg, 1819. Type, 

 Tabanus bicinclus Fabricius. Syn., Diabasis Macquart, 1834, preoccupied. 



Diacrita Gerst.ecker, Ent. Zeit. Stettin, vol. 21, p. 195, 1860. 1 species. Type, 

 Diacrita coslalis Gerst.ecker. Syn., Carlottiemyia Bigot, 1877. 



Diadocidia Ruthe, Isis von Oken for 1831, p. 1210, 1831. 1 species. Type Mycetoma 

 ferrugiuosa Meigen {as famcans, new species). Syn., Macronevra Macquart, 1834. 



Dialineura Rondani, Dipt. Ital. Prodr., vol. 1, p. 155, 1856. 1 species. Type, 

 Musca anilis Linn^us. Equals Thereva Latreille, 1796. 



Dialysis Walker, Ins. Saund., Dipt., p. 4, 1850. 1 species. Type, Stygia elongata 

 Say (as dissimilis, new species). Syn., Agnotomyia Williston, 1886. 



Diamesa Meigen, Syst. Beschr. Zweifl. Ins., vol. 7, p. 12, 1838. 2 species. Type, 

 Diamtsd valtlii Meigen, the first species, by present designation. 



DIaphoropeza Townsend, Smiths. Misc. Coll., vol. 51, p. 66, 1908. 1 species. Type, 

 Atrophopoda ^roM^r; Williston. Equals Paradidyma HRAUERand Bergenstamm, 1891. 



Diaphorus Meigen, Syst. Beschr. Zweifl. Ins., vol. 4, p. 32, 1824. 4 species. Type, 

 Dolichopus oculaf'us Fallen {as favocinctas, new species), the first species, by designa- 

 tion of Westwood, Intr., vol. 2, Synops., 1840, p. 134. Syn., Brachypus Meigen, 1824; 

 Lyroneurus Loew, 1857. 



Diasemocera Bezzi, Wien. Ent. Zeit., vol. 14, p. 137, 1895. 1 species. Type, 

 Psilopa roderi Girschner (as nigrotamiata, new species). Equals Psilopa Fallen, 

 1823. 



[Diastata Meigen, Syst. Beschr. Zweifl. Ins., vol. 6, p. 94, 1830. 16 species. Type, 

 Geomyza. obscureUa Fallen, the third species, by designation of Westwood, Intr., 

 vol. 2, Synops., 1840, p. 152. Not American]. ( Diastata of authors equals Calopterella, 

 new name.) 



Diathronomyia Felt, 23d Rep. State. Ent. N. Y., p. 339, 1908. 1 species. Type, 

 Diathronomyia artemisise Felt. 



Diatomineara Rondani, Arch. Zool., vol. 3, p. 84, 1864. 5 species. Type, Pari- 

 . gonius depressus Macquart, the first species, by present designation. Equals Pan- 

 gonius Latreille, 1802. 



Dichaeta Meigen, Syst. Beschr. Zweifl. Ins , vol. 6, p. 61, 1830. 1 species. Type, 

 Notiphila cuicdata Fallen. 



Dichaetoneura Johnson, Psyche, vol. 14, p, 9, 1907. 1 species. Type, Dichaion- 

 eura leucoptera Johnson. 



