154 PROCEEDINGS OP THE ACADEMY OF 



Anodonta Dahomeyensis. Testa lsevi, transversa, subinflata, ad latere com- 

 pressa, ad basim emarginata, valde inaequilaterali ; valvulis tenuibus ; natibus 

 subprominentibus ; epidermide tenebroso-oliva, striata, eradiata; margarita 

 caeruleo-alba et iridescente. 



Hab. Dahomey, West Africa. Mr. Fraser, by_H. Cuming. 



Anodonta Senegalensis. Testa, lcevi, transversa, subinflata, ad latere vei 

 planulata vel compressa, ad basim subemarginata, valde inaequilaterali ; valvu- 

 lis crassiusculis ; natibus subprominentibus, ad apices minute et oblique undn- 

 latis ; epidermide tenebroso-vhidescente, nitida, eradiata; margarita vel caeni- 

 leo-alba vel salmonis colore tincta et iridescente. 



Hab. ^Senegal. J. C. Jay, M. D., E. Verreaux and H. Cuming. 



Descriptions of Two New Species of UNIONES, from Georgia. 

 BY ISAAC LEA. 



Unio fibuloides. Testa, laevi, subrotunda, inflata, subaequilateraii ; valvulis 

 crassis, antice paulisper crassioribus ; natibus crassis et valde prominentibus ; 

 epidermide vel fusca vel luteo-fusca, antice striata ; dentibus cardinalibus 

 crassis, compressis crenulatisque ; lateralibus curtis, crassis, rectis granula* 

 tisque ; margarita alba, et iridescente. 



Hab, Connasauga River, Georgia. Bishop Elliott. 



Unio cojipactcs. Testa laevi, triangulari, subinflata, ad latere planulata, 

 postice angulata, inaequilaterali; valvulis crassis; natibus elevatis ; epidermide 

 luteo-oliva, radiis maculatis capillaris creberrimis ; dentibus cardinalibus par- 

 vis, erectis, in utroque valvulo duplicibus ; lateralibus curtis, crassis rectisque ; 

 margarita alba, et iridescente. 



Hab. Etowah River, Georgia. Bishop Elliott, and Rev. G. White. 



Descriptions of seven new species of UNIONES from South Carolina, Florida, 



Alabama and Texas. 



BY ISAAC LEA. 



Unio cacao. Testa, laevi, oblonga, subquadrata, compressa, ad latere planu- 

 lata, postice obtuse angulata, inasquilaterali ; valvulis subcrassis, antice cras- 

 sioribus ; natibus prominulis ; epidermide castanea, superne micante, inferne 

 striata; dentibus cardinalibus crassiusculis, striatis, suberectis, in utroque 

 valvulo duplicibus; lateralibus curtis, lamellatis rectisque; margarita purpures- 

 'ente et valde iridescente. 



Hab. Chacktahachie River, West Florida. Major Le Conte. 



Unio hepaticus. Testa, lsevi, ovato-oblonga, compressa, postice late biangu- 

 lata, inaequilaterali; valvulis subtenuibus; natibus prominulis; epidermide 

 micante, hepatica, vel eradiata vel obsolete radiata ; dentibus cardinalibus parvis, 

 subelevatis, striatis, in utroque valvulo duplicibus; lateralibus longis, lamellatis 

 subrectisque ; margarita pupurescente et valde iridescente. 



Hab. Salkakatche River, South Carolina. J. Postell. 



Unio viridiradiatus. Testa. la?vi, late" elliptica,, compressa, postice dilatata. 

 et obtuse angulata, autice regulariter rotundata, valde insequilaterali ; valvulis 

 subtenuibus ; natibus prominulis, ad apices minute et irregulariter undulatis ; 

 epidermide subnitida, radiis crebris capellaris ; dentibus cardinalibus parvis, 

 '.renulatis, in utroque valvulo duplicibus; lateralibus longis, lamellatis subrec- 

 tisque ; margarita purpurea et valde iridescente. 



Hab. Big Uchee, Alabama, near Columbus, Georgia. G. Hallenbeck. 



Unio macrodon. Testa laevi, triangulari, compressa, subaequilateraii, postice 



[May, 



