25 



bus sabpromiaentibus, ad apices rugoso-undulatis ; epidermide mellea., viridi 

 maculata, superne nitida, interne striata; dentibus cardinalibas parviusculis, 

 sulcatis ; lateralibus brevibus, obliquis rectisque ; margarita argentea et valde 

 iridescente. 

 Hab.— Alabama ? T. R. Ingalls, M. D. 



Unio pebpubpureus, — Te3ta laevi, elliptic; - !, subinflata, inaequilaterali, postice 

 et antice rotundata : valvulis subcrassis, antice crassioribus ; natibus promi- 

 nulis ; epidermide tenebroso-viridi, nigricente, radiis capillaris ; dentibus 

 cardinalibus parviusculis, erectis, conicis, in utroque valvulo duplicibus, striatis; 

 lateralibu3 longis rectisque ; margarita valde purpurea et iridescente. 



Hab. — Tennessee. J. G. Anthony. 



Unio Axthoxyi. — Testa, laevi, elliptica, inflata, ad latere planiusculi, postice 

 obtuse biangulata, postice rotundata, insequilaterali; valvulis subtenuibus, 

 antice paulisper crassioribus ; natibus prominulis ; epidermide luteo-oliva, 

 eradiate ; dentibus cardinalibus parvis, obliquis, subcompressis crenulatisque : 

 lateralibus longis, lamellati3 subcurvisque ; margarita casruleo-alba et irides- 

 cente. 



Hab. — Florida. J. G. Anthony. 



Mabgabitana quadeata. — Testa laevi, oblongA, subcompressa, ad latere 

 planulata, subaequilaterali, postice obtuse angulata, antice rotunda; valvulis 

 subtenuibus, antice paulisper crassioribus ; natibus prominulis, ad apices un- 

 dulatis ; epidermide luteola, viridi-radiata ; dentibus cardinalibus subgrandi- 

 bus, obliquis, compressis, triangularis, erectis subcurvisque ; margarita alba, 

 superne salmonis colore tincta, et valde iridescente. 



Hab. — East Tennessee, President Estabrook. 



Mabgabitana Alabamensis. — Testa laevi, oblonga, inflata, ad latere paulisper 

 planulata, inaequilaterali, postice obtuse biangulata, antice oblique rotundata • 

 valvulis subcrassis, antice paulisper crassioribus ; natibus prominulis, ad apices 

 rngoso undulatis ; epidermide luteo-oliva, polita, eradiata ; dentibus cardinali- 

 bus parvis, suberectis ; margarita alba et salmonia et iridescente. 



Hab. — Talladega Creek, Alabama. W. Spillman, M. D. 



