370 THE CANADIAN NATURALIST. [Oct. 



NATURAL HISTORY SOCIETY. 



Tlie first monthly meeting of the Society for the Session 1864-65 

 was held at its rooms on Monday evening, September 26th, Dr. 

 Dawson, President, in the chair. A large number of donations 

 were announced : 



To THE Museum. 



Blackburnian warbler (^Dendroica Blaclcburnice) and the black- 

 throated green warbler (^Dendroica virens), shot near Montreal, and 

 presented by Mr. ^Y. Hunter. A large collection of English beetles, 

 from W. M. S. D'Urban, Esq. A fine series of Canadian insects, of 

 all orders, from Messrs. John B. Goode, C. Foley , R. J. Fowler, and 

 Jas. Ferrier, jun. Fossils and recent shells from Prof. Dana (New- 

 haven), Dr. Hubbard (Staten Island), E. Seymour (New York), 

 and C. Hart. Also a number of single specimens of interest, but 

 which we cannot particularize from want of space. The donations 

 to the Library were also numerous. 



New Members. 



Prof. R. Bell was elected a corresponding, and G. W. Simpson, 

 Esq., an ordinary member of the Society. 



Proceedings. 



The first paper (On RusopTiycus GirMviUensis, Billings) was 

 then read by Principal Dawson. This paper is printed in the pre- 

 sent number. 



Mr. Billings read a paper, " On a remarkable specimen of Asa- 

 phus Platycei^lialus.^' The principal point of interest in this com- 

 munication was that the author claims to have discovered what the 

 legs of trilobites were like. The structure of the upper part of 

 these remarkable fossils, so familiar to the student of the older 

 fossiliferous rocks, has long been known to naturalists. Dr. Buck- 

 land, in his Bridgewater treatise, has described the microscopic 

 details of the eyes of these curious crustaceans, which organs are 

 not unfrequently preserved in the rocks, — and has fully illustrated 

 their complex, compound character. But until now, the only por- 

 tion of the under surface known was the part containing the 

 mouth. This organ is situated in a plate on the under surface of 



