532 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



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

 Type, Desmatoneura argentifrons Williston. 



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

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

 Ent. Zeit., vol. 22, 1903, p. 251. Syn., Macrui-us 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., Dm/Z« Westwood, 1840; Ida Desvoidv, 1863. 



D'exilla Westwood, Intr., vol. 2, Synops., p. 140, 1840. 1 species. Type, Mxmxi 

 rustica Fahricius. Equals Dexia Meigen, 1826. 



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

 Tj^pe, Aricia lacteipennis Zetterstedt. 



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

 Musca canina Fabricius. 



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

 ■87, 1889. 1 species. Type, Tacldna alhisqiiavia TiKFTERSTEiiT {as spectalritis Meigen). 

 Equals Lydella Desvoidy, 1830. 



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

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



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

 Diacrita costaUs Gerst^ecker. Syn., Carlottsemyia Bigot, 1877. 



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

 ferruginosa Meigen {as flavicans, new species). Syn., Macronevra IVIacquart, 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 elorigata 

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



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

 Diamesa icaltlii Meigen, the first species, by present designation. 



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

 Atropho])oda braueri Williston. Equals Paradidyma Brauer and Bergenstamm, 1891. 



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

 DoUchopus oculatus Fallen {as favocinctus, 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, 

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

 1823. 



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

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

 vol. 2, Synops., 1840, p. 152. Not American]. {Diastata of authors ecjuals CaloptereUa, 

 new name.) 



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

 Diathronomyia artemisias Felt. 



Diatomineura Rondani, Arch. Zool., vol. 3, p. 84, 1864. 5 species. Type, Pan- 

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

 gonius Latreille, 1802. 



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

 Notiphila caudata Fallen. 



Dichsetoneura Johnson, Psyche, vol. 14, p, 9, 1907. 1 species. Type, Dichseton- 

 eura leucoptera Johnson. 



