1853.] 241 



Dr. Leidy called the attention of the members to several fossil teeth, as 

 follow : 



1. Two superior molar teeth of Ejuus Amerieanus ; one from Texas, the other 

 from Ashley River, South Carolina, both sent by Prof. Holmes, of Charleston. 



2. Two superior molar teeth of a species of Hlpparioyi, discovered by Prof. 

 Holmes, on Ashley River, South Carolina. It is the first time this genus has 

 been found in America. For the species the name H.venustnm was proposed. 



3. A Irairment of an incisor of a large Rodent animal, probably, from its ap- 

 pearance, allied to Hydrochoencs capybara. It belonged to an animal interme- 

 diate in size to the latter and the C isteroides Okioeusis. The specimen was 

 found by Prof. Holmes on the Ashley River. For the species the name of Oromys 

 JEsopi was proposed. 



4. A fragment of a molar tooth of a giant sloth, differing from any of the 

 known genera, found by Prof. Holmes on the Ashley River. To the species 

 supposed to be indicated by the specimen, Eiibradys antiqtius was given. 



5. A molar of a giant sloth, differing from the last and other known genera, 

 found near Natchez, Mississippi. For the animal the name Ereptodon prisciis was 

 proposed. 



February \bth. 

 The President, Mr. Ord, in the Chair. 



A letter was read from the Secretary of the Royal Geographical So- 

 ciety, dated London, Oct. 14, 1852, acknowledging the receipt of a 

 copy of the " Notice of the Academy," by Dr. Ruschenberger. 



Also a letter from Dr. R. C. Chambers, dated Redgrove, Elk Co., 

 Penn., Feb. 6, 1853, offering to the Academy crania of Mammalia, 

 found in that portion of the State. Referred to the Curators. 



Dr. Francis Greene read a communication entitled, " Chemical 

 investigation of the remains of fossil Mammalia/' which was referred to 

 Dr. Grenth, Dr. Bridges and Dr. Camac. 



Dr. Grenth presented two papers, for publication in the Proceedings, 

 viz. " On a new variety of Grey Copper, perhaps a new mineral,'^ and 

 "OnOwenite, a new Mineral;" both of which were referred to Dr. 

 Bridges, Dr. Rand and Dr. Wetherill. 



Dr. Le Conte presented a paper for publication in the Proceedings, 

 entitled, " Synopsis of the species of the Histeroid genus Abrseus, in- 

 habiting the United States," which was referred to Dr. Zantzinger, Mr. 

 Cassin and Dr. Rand. 



Prof. Baird presented a list of Reptiles collected in California by Dr. 

 John L. Le Conte, with descriptions of new species. Referred to Dr. 

 Bridges, Dr. Hallowell and Dr. Leidy. 



Dr. Heermann presented a paper for publication in the Proceedings, 

 entitled, " A Catalogue of the Oological collection of the Academy of 

 Natural Sciences of Philadelphia;" which was referred to Mr. Cassin, 

 Col. M'Call and Dr. Le Conte. 



Mr. Cassin presented a paper for publication in the Proceedings, 

 describing a new species of the genus Scalops, from Oregon, from the 

 collection of the U. S. Exploring Expedition. Referred to Dr. Bridges, 

 Dr. Leidy and Dr. Le Conte. 



A communication intended for publication in the Journal, from the 



