NATURAL SCIENCES OP PHILADELPHIA. 193 



dentibus carclinalibus parvis, siil)compressis creiuilatisque ; late- 

 ralibus longis, lamellatis subcurvisque ; margarita alba et irides- 

 cente. 



Hah. Ogeechee River, Liberty Co., Geo., Major John Le Conte. 



Unio pattinoides. 



Testa loevi, obliqua, subcompressa, valde insequilaterali, antice 

 rotundata, postice obtuse angiilata ; valvulis subcrassis, antice 

 crassoiibus ; natibus subpromiuentibus, fere terminalibus ; epi- 

 dermide Inteo-brunnea, maculata ; dentibus cardinalibus parvis, 

 subcompressis corrugatisque ; margarita argentea et iridesceute. 



Hah. Clinch River, Pres. Estabrook. Holston River, Dr. 

 Edgar and Miss Law. 



Unio Santeeusis. 



Testa lasvi, suboblonga, subinflata, valde insequilaterali, antice 

 rotundata, postice obtuse biaugulata ; valvulis crassiusculis ; 

 natibus prominulis, ad apices minute undulatis; epidermide 

 tenebroso-fusca, nitida et valde radiata; dentibus cardinalibus 

 parvis, compressis et in utroque valvulo duplicibus ; lateralibus 

 longis subcurvisque ; margarita vel purpurea vel salmonis colore 

 tincta et iridesceute. 



Hah. Santee Canal, S. C, Dr. Foreman. Oconee River, Geo., 

 Major J. Le Conte. 



187L] 



