150 [February, 



From Prof. J. Cobb, dated Louisville, Kentucky, February 6th, 

 iS-iO, acknowledging the receipt of his notice of election as Corres- 

 pondent. 



From Dr. Rereiult, dated Dantzig, 1st October, 184-8, accompanying 

 a copy of the first Number of his work on Fossil Remains found in 

 Amber, this evening presented, and requesting exchanges of North 

 American fossils of the same description for those of Europe. 



J\Ir. Cassin presented a Catalogue of the Vttlturidcr and Strli;idrp in 

 the Collection of the Academy, intended for publication in the Pro- 

 ceedings. Referred to a Committee, consisting of Drs. Wilson, Gambel 

 and Townsend. 



Professor Agassiz made some observations on the remarkable 

 resemblance of the existing North American Fauna and Flora to that 

 of the Tei-tiary period of the Old World. 



February 2Qth, 1849. 

 Dr. B. H. CoATES in the Chair. 



Mr. Cassin read a paper entitled " Descriptions of new species of 

 the genera A^ydnh and Sycnbius, specimens of which are in the Col- 

 lection of the Acad. Nat. Sci. of Philadelphia. ' Referred to a Com- 

 mittee, consisting of Dr. Wilson, Dr. Gambel, and Dr. l^ridges. 



]\lr. Conrad read a paper entitled " Descriptions of new fresh-water 

 and marine Shells," which was referred to Mr. Phillips, Dr. Griffith, 

 and Dr. Gambel. 



Mr. Cassin read some " Notes of an examination of the families 

 Vulturid.T; and Strigida^ in the Collection of the Acad. Nat. Sci. of 

 Philadelphia." Referred to the Committee on the previous paper of 

 this evening. 



Dr. Hallowell presented a communication entitled " Notes of the 

 post-mortem appearances of a Cynocep/uilus? which died in the Mena- 

 gerie at Philadelphia." Referred to Drs. Leidy, Keller and Gambel. 



February 27 f/i, 1849. 



Dr. Bridges in the Chair. 



The Committee on Mr. Cassin's " Catalogue of the Vulturidse and 

 Strigids in the Collection of the Academy of Natural Sciences of 

 Philadelphia," reported in favor of publication. 



[This paper will be found at the end of the present number, and is the com- 

 mencement of a series of similar catalogues of the families in the Ornithological 

 collection of the Academy, which it is the design of the Committee on that 

 department to prepare for publication as soon as possible.] 



