19 



H. LOEW and C. R. OSTEN SACKEN. Monographs of the Diptera of 

 North America. 4 parts. Washington, Smithsonian Institution, 

 1862-1872. <Srnithsonian Miscellaneous Collections. 



The several monographs will be found under the respective families. 



H. LOEW. Diptera America septentrionalis indigena. 2 parts. Ber- 

 lin, 1861-1872. (Originally published in 10 centurise in the 

 Berliner Entomol. Zeitschrift.) 



Descriptions of 1,000 North American Diptera, but without synoptic 

 arrangement. 



C. R. OSTEN SACKEN. Western Diptera: Descriptions of new gen era 

 and species of Diptera from the region west of the Mississippi, 

 and especially from California. <Bul. U. S. Geolog. and Geogr. 

 Survey of the Territories, Vol. Ill, 1877, pp. 189-354. 



FR. BRAUER. Die Zweiflugler des Kaiserlichen Museums zu Wien. 

 Parts I-III. Wien, 1880-1883. 



Important contributions to the classification of the Diptera. 



C. H. T. TOWNSEND. The North American genera of Nemocerous 

 Diptera. <Trans. Amer. En torn. Soc., 1892, pp. 144-160. 



III. MONOGRAPHS AND SYNOPSES. 

 CECIDOMYIID^E. 



J. WINNERTZ. Beitrag zu einer Monographic der Gallmucken. 

 <Linnaea Entomologica, Vol. VIII, 1853, 4 pis. 



C. R. OSTEN SACKEN. On the North American Cecidomyidae. <Mon- 

 ographs of the Diptera of North America, by H. Loew and C. R. 

 Osten Sacken, Part I, No. 5, 1862, pp. 173-205. 



B. D. WALSH. On the insects, Coleopterous, Hymenopterous, and 

 Dipterous, inhabiting the galls of certain species of Willow. Dip- 

 tera. <Proc. Entoni. Soc. Phila., Vol. Ill, 1864, pp. 543-644; 

 Vol. VI, 1866, pp. 223-229. 



J. VON BERGENSTAMM and PAUL LOEW. Synopsis Cecidomyidarum. 

 <Verh. k. k. zool.-bot. Ges. in Wien, Vol. XXVI, 1876, pp. 1-104. 

 A synopsis of all the literature of the family. 



MYCETOPHILID^E. 



J. WINNERTZ. Beitrag zu einer Monographic der Pilzmucken. 

 <Verh. k. k. zool.-bot. Ges. in Wien, 1863, pp. 637-694. 

 Useful for determination of genera; no American species are described. 



J. WINNERTZ. Beitrag zu einer Monographic der Sciarinen. Wien, 

 1867, pp. 187. 



