138 



together with notes on the genera Potamophilus, the larger species of 

 Dyticus, the species of Hydroporus, and a new genus, Zeugophora. 

 Five new species of Monotonia were also described by him in Ger- 

 mar's ' Zeitschrift,' v. 1. 



Dr. Laurenz Oken, was editor of the 'Isis,' a work containing a 

 mass of entomological articles from various contributors, and the au- 

 thor of many elementary works (' Lehrbuch der Naturgeschichte,' 

 ' Lehrbuch der Naturphilosophie ') written in a deeply philosophical 

 spirit, of which scarcely any traces are to be found in English works, 

 if, indeed, we except some of the recent memoirs of Professor Owen, 

 in, which several of the views of Oken are elaborated. 



Dr. Frederick Augustus Gebler, born 3|15 December, 1782, of 

 Saxon parents, having entered the service of Russia, became esta- 

 blished at Barnaoul, in Siberia, where he died on the 9J21 of March, 

 1850. He was the author of numerous memoirs, chiefly on Siberian 

 Coleoptera, which appeared, between 1817 and 1847, in the ' Me- 

 moires' and 'Bulletin' of the Imperial Society of Naturalists of 

 Moscow, the 'Bulletins' of the Imperial Academy of Sciences of St. 

 Petersburgh, in the ' Essais Entomologiques ' of Hummell, and in 

 Ledebour's ' Reise in das Altai Gebirge ; ' a complete list of which is 

 given in the Moscow ' Bulletin ' for 1850, (p. 589). 



William Spry, formerly a member of this Society, also died in the 

 beginning of the past year. He will be long remembered as an ento- 

 mological artist of great ability, and as the draughtsman of the excel- 

 lent plates of the work on the genera of British Coleoptera, published 

 by him in conjunction with Mr. Shuckard. The portrait of Fabricius 

 in the 4th volume of our 'Transactions' was also drawn by him. 



In bringing this sad list to a close, allow me, on the other hand, to 

 add, that it is a source of much hopeful anticipation that the place of 

 these, our departed friends, may soon be filled up from the numerous 

 ranks of our rising entomologists. A slight survey of the entomological 

 world of the present day, as compared with its state a quarter of a 

 century since, is sufficient to inspire strong hopes for the future pro- 

 gress of our science, if even but a few of the many of our younger 

 members will only resolve to extend their views, and instead of rest- 

 ing satisfied with being collectors, will patiently investigate and record 

 the natural history and transformations, the minute anatomical 

 structure, external and internal, and the natural relations of insects 

 amongst themselves. Any of these objects of study will, be assured, 

 amply repay the attention bestowed upon it. 



I have now to direct your attention to the progress of the literature 



