50 



11 Swammerdamm, Johann. Buch tier Natur . . . Leipzig, 1752. 



In all cases where I have had occasion to cite Swammerdamm's Bybel dcr Natuure I have 

 cited the above German translation. 



12 Reaumur, R. A. F. Memoires pour servir a 1'histoire des insectes. 



Citations are given in this paper from the edition of this work published in Amsterdam, 1737-1748. 



18 Barth, Johann Mathaeus. Dissertatio de culice. Ratisbonae, 1737. 

 I have not seen this work. 



14 Sulzer, Johann Heinrich. Die Kennzeichen der Insekten . . . Zurich, 1761. 



15 Gravenhorst, J. L. C. Grundziige der systematischen Naturgeschichte . . . Breslau, 1817. 



16 Meigen, Johann Wilhelm. Systematisch'e Beschreibung der bekannten europaischen zwei- 



fliigeligen Insekten . . . Aachen, 1818-1838. 



17 Packard, Alpheus Spring, Jr. Guide to the study of insects . . . Salem, 1869. 



Citations are from the first edition. 



18 Jordens, Johann Heinrich. Entomologie und Helminthologie des menschlichen Kb'rpers . . . 



Hof, 180J. 



19 Clans, Carl. Grundziige der Zoologie . . . Marburg und Leipzig, 1876. 



20 Roffredri, D. Moriz. Memoire sur la trompe du cousin et sur celle du taon . . . (Miscell. 



Soc. Taurinens., 1766-1769, t. 4, p. 1-46, tab. 3.) 

 I have not seen this paper. 



21 Suffolk, W. T. On the proboscis of the blow-fly. (Monthly microscopical Journ., 



June 1869, v. 1.) 



I have not seen this paper. 



22 Gleichcn, Friedrich Wilhelm. Geschichte der gemeinen Stubenfliege . . . Niirnberg, 1764. 



23 Loivne, Benjamin Thompson. The anatomy and physiology of the blow-fly (Musca 



vomitoria, Linn.) . . . London, 1870. 



24 Macloskie, George. The proboscis of the house-fly.- (Amer. Naturalist, March 1880, 



v. 14, p. 153-161, fig. 1-3. 



