28 WORKS ON NORTH AMERICAN ENTOMOLOGY. 
Mercen, F. W.—Systematische Beschreibung der bekannten euro- 
piischen zweifliigeligen Insecten. 7 vols. Aachen und Hamm, 
1818-1838. 
Although dealing only with the European fauna and now antiquated 
and superseded in many parts, this work is still the foundation of 
the modern classification of Diptera. 
Wiepemann, C. R. W.—Aussereuropiische zweifliigelige Insecten. 
2 vols. Hamm, 1828-1830, with plates. 
A continuation of Meigen’s work, and containing descriptions of many 
genera and species belonging to the North American fauna, 
Macquart, J.—Diptéres exotiques nouveaux ou peu connus. 2 vols. 
in 5 parts and 5 supplements. Paris, 1838-1855. <Extr. Mém. 
Soe. Sci. Arts, Lille. 
Contains descriptions of many North American genera and species. 
Scuiner, J. R.—Fauna Austriaca. Die Fliegen (Diptera). Nach der 
analytischen Methode bearbeitet, mit der Characteristik simmt- 
licher europiischer Gattungen, der Beschreibung aller in Deutsch- 
land vorkommenden Arten und der Aufzihlung aller bisher be- 
schriebenen europiischen Arten. 2 vols. Wien, 1862-1864. 
Although dealing with the European fauna, this work is very useful on 
account of the analytical tables of families and genera. 
Loew, H., and Osten Sacxen, C. R.—Monographs of the Diptera of 
North America. 4 parts. Washington, Smithsonian Institu- 
tion, 1862-1872. <Smiths. Mise. Coll. 
The several monographs will be found under the respective families. 
Loew, H.—Diptera. Americe septentrionalis indigena. 2 parts. 
Berlin, 1861-1872. (Originally published in 10 centuriz in the 
Berliner Entomologische Zeitschrift.) 
Descriptions of 1,000 North American Diptera, but without synoptie 
arrangement. 
OstEN Sackxen, C. R.—Western Diptera: Descriptions of new gen- 
era and species of Diptera from the region west of the Missis- 
sipp!, and especially from California. <Bul. U. S. Geol. and 
Geog. Surv., 11, pp. 189-354, 1877. 
Braver, Fr.—Die Zweifliigler des kaiserlichen Museums zu Wien. 
Parts I-III. Wien, 1880-1883. 
Contributions to the classification of the Diptera. 
Townsenp, C. H. T.—The North American genera of Nemocerous 
Diptera. <Trans. Amer. Ent. Soc., x1x, pp. 144-160, 1892. 
Warton, W. R.—An illustrated glossary of cheetotaxy and anatomi- 
cal terms used in describing Diptera. <Ent. News, 1909, pp. 
307-319, pls. 2. 
