190 PROCEEDINGS OF THE ACADEMY OF 



curvis lamellatisque ; margarita salmonis colore tiucta et elegan- 

 tissime iridescente. 



Hob. Cahaba River, Shelby Co., Alab., E. R. Schowalter, M.D. 



Unio simulans. 



Testa la3vi, obliqua, subcompressa, injequilaterali, antice rotuii- 

 data, postice obtuse angulata ; valvulis crassiusculis, antice crassi- 

 oribus ; uatibus prominulis ; epidermide teuebroso-fusca, eradiata ; 

 deutibus cardinalibus parvis, compressis crenulatisque; margarita 

 alba et iridescente. 



Hah. Cababa River, Shelby Co., Alab., E. R. Schowalter, M.D. 



TJnio Cahabensis. 



Testa valde tuberculata, qnadrata, compressa, subasquilaterali, 

 antice rotunda, postice truncata; valvulis subcrassis, antice crassi- 

 oribus ; natibus subprominentibus ; epidermide crocea, eradiata ; 

 dentibus cardinalibus subgrandis, compressis crenulatisque ; mar- 

 garita salmonis colore tincta et elegantissime iridescente. 



Hah. Cahaba River, Shelby Co., Alab., E. R. Schowalter, M.D. 



Unio acuens. 



Testa Iffivi, triangulari, compressa, valde ineequilaterali, antice 

 rotundata, postice subbiangulata; valvulis crassiusculis, antice 

 crassioribus ; uatibus prominentibus ; epidermide luteola, radiis 

 iuterruptis ; dentibus cardinalibus subcrassis, subcompressis cre- 

 nulatisque; lateralibus subcrassis, brevis subrectisque; margarita 

 alba et iridescente. 



Hah. Holston River, near Concord, E. Tenn., Miss Law. 



TJnio crudus. 



Testa laevi, subrotunda, comijressa, insequilaterali, antice 

 rotunda, postice obtuse angulata; valvulis subcrassis, antice 

 crassioribus; natibus prominentibus; epidermide rugosa, tene- 

 broso-fusca, eradiata; dentibus cardinalibus subgrandibus, sub- 

 compressis crenulatisque ; lateralibus crassis, subbrevis subcur- 

 visque ; margarita argentea et parum iridescente. 



Hah. French Broad River, E. Tenn., Pres. Lindsley. Swamp 

 Creek, Murray Co., Geo., Maj. Downie. Holston River, Miss 

 Law and C. M. Wheatle3\ 



ITnio Tuscumbiensis. 



Testa Isevi, triangulari, tumida, ad latere planulata, intequi- 

 laterali, antice subtruncata, postice obtuse angulata ; valvulis 



[October 24, 



