PROCEEDINGS 



OP THE 



ACADEMY OF NATURAL SCIENCES 



OF PHILADELPHIA. 

 1864. 



January 5th. 

 Vice-President Vaux in the Chair. 



Twenty members present. 



A letter was read from Thomas B. Wilson, M. D., Newark, Del., 

 January 1, 1864, acknowledging his election as President of the 

 Academy. 



The following was presented for publication : " The Crania of Colym- 

 bus torquatus and C. Adamsii compared." By Elliott Coues, M. D, 



January 12th. 

 Vice-President Vaux in the Chair. 



Thirty members present. 



The following were presented for publication : 



" Description of a New Genus of the Family Melanidse." " Descrip- 

 tion of Eleven New Species of Melanidae," and " Description of Plan- 

 orbis Newberryi." By Isaac Lea. 



" Thoughts on the Influence of Ether in the Solar System/' etc. 

 By Alexander Wilcocks, M. D. 



" Descriptions of New Polydesmidae," and " Descriptions of New 

 Iulidffi." By Dr. H. C. Wood, Jr. 



On leave granted, Mr. Cassin presented the following preamble and 

 resolutions, which were unanimously adopted : 



Whereas, our eminent and highly-esteemed associate and President, 

 Isaac Lea, LL. D., having declined being a candidate for re-election 

 to the position of chief officer of this Academy, has retired there- 

 from : 



Resolved, That the Academy does hereby express its most grateful 

 1864.] 1 



