614 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



Thalassomya Schiner, Verb. Zool.-Bot. Ges. Wien, vol. 6, p. 219, 1856. 1 

 species. Type, TJialassomya frauenfeldi Scui'ser. 



Thamnodromia Mik, Wien. Ent. Zeit., vol. 5, p, 278, 1886. Change of name for 

 Phyllodromia Zetterstedt, 1837, not of Serville, 1839. Tj'pe, Emph mekmocephala 

 Fabricius. Equals Hemerodromia Meigen, 1822. 



TJiapsia Desvoidy, Hist. Nat. Dipt., vol. 1, p. 689, 1863. 1 species. Type, Tachma 

 albicoUis Meigen. Equals Neaera Desvoidy, 1830. 



Thaumalea Ruthe, Isis von Oken for 1831, p. 1211, Nov., 1831. 1 species. Type, 

 Orphnephila devin Halid.w (as testacea, new species). Equals Orphnephila Haliday, 

 September, 1831. 



Thecophora Rondani, Nuovi Ann. Sci. Nat. (Bologna) for 1845, p. 15, 1845. 1 

 species. Type, Myopa atra Fabricius. Syn., Occernya Desvoidy, 1853. 



Thelairia Desvoidy, Essai Myod., p. 214, 18.30. 1 species (as 2). Type, Musca 

 nigrijx's Fabricius. 



Thelairodes Wulp, Biol. Centr.-Amer., Dipt., vol. 2, p. 254, 1891. 3 species. 

 Tyjie, Homodexia rittigera Bigot, the first species, by designation of Brauer and 

 Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 58, 1891, p. 377. 



Themira Desvoidy, Essai Myod., p. 745, 1830. 2 species. Type, Themira pilosa 

 Desvoidy, the first species, by present designation. Syn., Cheligaster Macquart, 

 18.35; HdlidayaRoNDAm, 1856. 



Theobaldia Neveu-Lemaire, Compt. Rend. Soc. Biol., vol. 54, p. 1331, 1902. 1 

 species. Type, Culex anmdalus SciiRAysK. Syn., Tlieohaldinella BhAHCHARV, 1905. 



T/ieubaldincUa Blanchard, Les Moust., p. 390, 1905. Change of name for Theo- 

 baldia Neveu-Lemaire, 1902, under the mistaken impression that it interferes with 

 Theobaldius NEVihhE. Type, Cnle.c annulalitsScnRAyK. Equals Theobaldia Neveu- 

 Lemaire, 1902. 



Theone Desvoidy, Hist. Nat. Dipt., vol. 2, p. 401, 1863. 1 species (as 2). Type, 

 Tachiva poJyodon Meigen. Equals Amobia Desvoidy, 1830. 



Theresia Desvoidy, Essai Myod., p. 325, 1830. 1 species. Type, Theresia tandrec 

 Desvoidy. Syn., *S'arrf/ocera Brauer and Bergenstamm, 1889. 



Thereva Latreille, Precis, p. 167, 1796. No species. In his Hist. Nat. Crust, et 

 Ins., vol. 3, 1802, p. 441, 1 species. Type, Mmca plebeja Linn.eus. Syn., Dialinenm 

 Rondani, 1856. 



Therioplectes Zeller, Isis von Oken for 1842, p. 819, 1842. 8 species. Type, 

 Tabanus tricolor Zeller, the first species, by present designation. Equals Tabanus 

 LiNN^us, 1758. 



Thevenemyia Bigot, Bull. Soc. Ent. France for 1875, p. 174, 1875. 1 species. Type, 

 Thertnemyia californica Bigot. Equals Eclimus Loew, 1844. 



Thinodromia Melander, Ent. News, vol. 17, p. 370, 1906. 1 species. Type, 

 Tfiinodromia inchoata Melander. 



Thinophilus Wahlberg, Ofv. Kongl. Vet. Akad. Forh., vol. 1, p. 37, 1844. 2species. 

 Type, Rhaphium flavipalpe Zetterstedt, the first species, by designation of Zetter- 

 stedt, Dipt. Scand., vol. 8, 1849, p. 3101. 



Thricops Rondani, Dipt. Ital. Prodr., vol. 1, p. 96, 1856. 1 species. Type, Aricia 

 hirtula Zetterstedt. Syn., Tricophihicus Rondani, 1861; Rhynchotrichops Schnabl, 

 1889. 



Thrycolyga Rondani, Dipt. Ital. Prodr., vol. 1, p. 68, 1856. 1 species. Type, 

 Thrycolyga nova Rondani. Syn., Scotia Desvoidy, 1863. 



Thrypticus Gerst.ecker, Ent. Zeit. Stettin, vol. 24, p. 43, 1864. 1 species. Type, 

 Thrypticus sma.ragdinus Gerst^ecker. Syn., Aphantotimus Wheeler, 1890; Zantho- 

 tricha Aldrich, 1896. 



Tliryptocera Macquart, Recueil Trav. Soc. Sci. Lille for 1834, p. 310, 1834. 9 

 species. Type, Tachina jnlipennis Fallen, the ninth species, by designation of Ron- 



