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portant labours of Professor Kolenati and Professor Oscar Schmidt, 

 in Natural History, and to those of M. Albrecht Schrauf in Physics. 



Dr. Friedrich Anton Kolenati, Professor of Natural History in the 

 Polytechnicum of Briinn in Moravia, and Founder of the Bohemian 

 Natural History Society 'Lotos,' is the author of upwards of 100 

 memoirs on various departments of Natural History, Geology, Mine- 

 ralogy, and Crystallography, containing descriptions of nearly 400 

 species discovered by himself. The limits of this notice forbid the 

 recital of the titles of these memoirs, or of the names of the species 

 therein described. Some of Professor Kolenati's principal works 

 are: 



Meletemata Entomologica, containing a description of the insects 

 discovered by the author during a journey in the Caucasus and 

 Transcaucasian provinces of Russia in the years 1843, 1844, 1845, 

 1846. Also various Memoirs on Chiroptera, Arachnida, and Insects, 

 published independently or in the Sitzungsberichte der Wiener Aka- 

 demie, Lotos, and the Memoires de la Societe Imperiale des Natura- 

 listes de Moscou, 1861. 



Dr. Oscar Schmidt, Professor of Zoology and Comparative Ana- 

 tomy at Gratz, is the author of the following memoirs : 



1. Die rhabdocoelen Strudelwiirmer des sussen Wassers. Jena. 



2. Neue Beitrage zur Naturgeschichte der Wiirrner, gesammelt 

 auf einer Reise nach den Faroer. Jena. 



3. Neue Rhabdocoelen aus dem nordischen und dem adriatischen 

 Meere. Sitzungsberichte der Wiener Akademie. Band IX. 



4. Zur Kentniss der Turbellaria rhabdocoela, &c. des Mittel- 

 meeres. Sitzungsberichte der Wiener Akademie. Band XXIII. 



5. Die rhabdocoelen Strudelwiirmer aus den Umgebungen von 

 Krakau. Denkschriften der Wiener Akademie. Band XV. 



6. Die dendrocoelen Strudelwiirmer aus den Umgebungen von 

 Gratz. Zeitschrift fur wissenschaftliche Zoologie. Leipzig. Band X. 



7. Untersuchungen iiber Turbellarien von Corfu und Cephalonien. 

 Zeitschrift fur wissenschaftliche Zoologie. Leipzig. Band XI. 



8. Ueber Planaria torva Autorum. Zeitschrift fur wissenschaft- 

 liche Zoologie. Leipzig. Band XI. 



The first five memoirs are devoted only to the arrangement of 

 worms, Class "Turbellaria," which Ehrenberg named "Rhabdocoela." 

 Subsequently the investigations are extended to the " Dendrocoela." 



