PROCEEDINGS 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OF PHILADELPHIA. 



18 G 3. 



January 1th. 



Dr. Leidy in the Chair. 



Fourteen members present. 

 A paper was presented for publication entitled 

 Description of new Cretaceous Fossils from Nebraska Territory, etc., 

 by F. B. Meek and F. V. Hayden, M. D. 



Mr. Cope stated that he had examined the dentition of the Siamese river 

 snake, Herpeton tentaculatum, respecting which some difference of 

 opinion existed among European herpetologists. He had found the posterior 

 maxillary teeth to be grooved, in accordance with the statement of M. Dumeril. 



Regarding another point of difference between naturalists the native coun- 

 try of the Gerarda prevostiana ( Campylodon Dum.) Mr. Cope adhered 

 to the statement in the Erpetologie Generale, that it inhabited the Philippine 

 Islands. Others had stated that the form was West Indian. 



Dr. Giinther had corrected the above-mentioned work in its statement that 

 the Rhabdosoma (Catostoma) 1 i n e a t u m was West African. Mr. Cope was 

 able to confirm the Doctor's opinion through specimens obtained in Trinidad, 

 and lent him by Prof. Gill. 



January \kth. 

 Vice President Vaux in the Chair. 



Twenty members present. 



The following papers were presented for publication : 



Notes on some American Ash Trees, (Fraxinus), with descriptions 

 of new species, by S. B. Buckley. 



On the Leucosomi inhabiting the basin of the Delaware, by C. C. 

 Abbott. 



1862.] 1 



