32 PROCEEDINGS OF THE ACADEMY OF [1885. 



organisms. The principle that contained the germ of form was, 

 however, yet as wholly unknown as that of the supposed disease- 

 germs of the atmosphere. 



March 10. 

 The President, Dr. Leidy, in the chair. 



Twenty-four persons present. 



The following papers were presented for publication : — 



" New Genera and Species of Fossil Cockroaches from the 

 Older American Rocks," by Samuel H. Scudder. 



" A Revision of the North American Melicre," by F. Lamson 

 Scribner. 



" A Review of the American Eleotridinae," by Carl H. Eigen- 

 mann and Morton "W. Fordice. 



The deaths of Samuel Powell and Geo. Whitney, members, and 

 of Benjamin Silliman, Jr., a correspondent, were announced. 



Rhinoceros and Hippotherium from Florida. — Prof. Leidy 

 directed attention to some fossil remains, recently received from 

 Dr. J. C. Neal, of Archer, Florida, and obtained by him from the 

 same deposit noticed in the Proceedings of 1884, p. 118. Dr. 

 Neal writes that he had again examined the locality in company 

 with Prof. L. C. Johnson, who reports that the deposit overlies 

 the Yicksburg limestone of Eocene age. Dr. Neal adds that the 

 deposit appears to be the portion of the border of a lagoon of 

 post-Tertiary age, and that it is now about 100 feet by 50 feet in 

 extent. He also remarks that he has anxiously looked for relics 

 of man, but thus far in vain. The fossils are mingled together in 

 the greatest confusion, are badly fractured, but not water-worn. 



The remains submitted, besides several less characteristic frag- 

 ments of a crocodile, a carnivorous animal about the size of a fox, 

 and of a lama, consist of two Avell-preserved teeth of a Rhino- 

 ceros and a Hippotherium. 



The tooth of the rhinoceros fortunately happens to be one of 

 the most characteristic of the series, and presents differences 

 sufficient^ from those of the many extinct forms of this country 

 to render it probable that it indicates another species. The 

 specimen is the crown, but slightly worn, of a last upper molar 

 of the left side. It is especially remarkable for the extent of 

 production of the intermediate folds of the chief lobes of the 

 crown, in comparison with their condition in known forms of the 

 genus. The fold of the anterior lobe is directed backward about 

 half the interval of the lobes, and extends from the base to the 

 triturating border of the crown. Its upper portion is half cylin- 

 drical ; its lower portion compressed from without inward, and 

 half elliptical in the length. It has the shape of a knife with a 



