1853.] O41 
Dr. Leidy called the attention of the members to several fossil teeth, as 
follow : 
1. Two superior molar teeth of Equus Americanus; 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 Hipparion, 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. venustum was proposed. 
3. A fragment of an incisor of a large Rodent animal, probably, from its ap- 
pearance, allied to Hydrochoerus capybara. It belonged to an animal interme- 
diate in size to the latter and the Czsterotdes Ohioensis. The specimen was 
found by Prof. Holmes on the Ashley River. For the species the name of Oromys 
4ijsopt 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, Exbradys antiquus was given. 
5. A molar ofa giant sloth, differing from the last and other known genera, 
found near Natchez, Mississippi. For the animal the name Eveptodon priscus was 
proposed. 
February 15th. 
The President, Mr. Orp, 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. ‘“Keferred to the Curators. 
Dr. Francis Greene read a communication entitled, ‘Chemical 
Investigation of the remains of fossil Mammalia,” which was referred to 
Dr. Genth, Dr. Bridges and Dr. Camac. 
~ Dr. Genth presented two papers, for publication in the Proceedings, 
viz. ‘On a new variety of Grey Copper, perhaps a new mineral,” and 
‘¢On Owenite, 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 Abreeus, 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 
