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♦1896 Mik. Wiener Ent. Zeitg. XV. 242-247. 



* Monnier. Bulletin Soc. Vand. 2. XIII. p.60. 



*1897 Morley. Ent. Monthly Mag. XXXIII. 90. 



* Mueller, 0. F. Von Wiirmern des siissen u. salz, Wassers. 22. 



*1899 Needham. U. S. Nat. Mus. Bui. 39. Part O. 



*1901 Needham. N. Y. State Museum, Bulletin 47. 



*1903 Needham. N. Y. State Museum, Bulletin 68. 



1873 Nowicki. Beitr. z. Kenntn. d. Dipt. Fauna Galiziens. 



*1896 Osborn. Iowa Experiment Station Kept. No. 32. 



*1870 Osten Sacken. Trans. Amer. Ent. Soe. III. 51. 



1877 Osten Sacken. U. S. Geol. Survey. Bulletin. Art. XIII. 



1878 Osten Sacken. Catalogue of Diptera, N. A. 



*3869 Packard. Proc. and Commun. Essex lustit., VI. 42. 

 *1870 Packard. Amer. Journ. Sc. I. 100-110. 

 *1870 Packard. Monthly Micros. Journ. V. 133. 

 *1884 Packard. Amer. Nat. XVIII. 826-828. 



1813 Panzer. Fauna Germanica. CIX. 

 *1847 Perris. Ann. Soc. Ent Fr. 

 *1870 Perris. Ann. Soc. Ent. Fr. 138, 232, 320, 366. 

 *1900 Pettit. Mich. Ac. of Sc. First Rept. 110. 



1865 Philippi. Verh. z. b. Gesel. Wien. XV, 600. 11. 



1851 Poey. Mem. sobre la Hist. Nat. de la Isla de Cuba. I. 

 *1738 Reauniur. Mem. IV. 



1884 Ridley. Ent, Monthly Mag. 

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1857 Rondani. Dipterologiae Italicae Prodromus. II. 



1823 Say. Journ. Acad. Nat. Sc. III. 



1824 Say. American Entomology. II. 

 1829 Say. Journ. Acad. Nat. Sc. VI. 

 1859 Say. Complete Writings. I, II. 

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 1862 Schiner. Fauna Austriaca. I. 

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*1868 Schiner. Reise der Oestr. Frogatte Novara. Diptera. 

 *1&48 Scholtz. Ent. Z. Breslau. 1 :3, 9, 22. 



1803 Schrank. Fauna Boica. III. 

 *1854 Schubaert. Handel. Noderl. Entom. Vereen. 10-12, 13-15. 

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 *1850 Schubaert. Allgem. Konst. en Letterbode. 48-50. 



1886 Scudder. U. S. Gcol. Survey, Bui. 31. 91. 



1889 Skuse. Proc. Linn. Soc. N. S. W. (2). IV. 215-311. 

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1839 Staeger. Krojer's Naturhlst. Tidsskr. II. 



1845 Staeger. Krojer's Naturhist. Tidsskr. I, n. ser. 



1829 Stephens. A Sy.st. Cat'l. of Brit. Ins. 



