32 PROCEEDINGS OP THE ACADEMY OF 



acuminatis crenulatisqiie ; lateralibns prselongis, lamellatis subrectisque ; marga- 

 rita alba et iridescente. 



Hab. Creeks near Columbus, Georgia. Bisbop Elliott. 



Unio fallax. Testa Isevi, elliptica, subinfiata, insequilaterali, antice et postice 

 regulariter rotundata ; valvulis subtenuibus ; natibus prominulis, ad apicem 

 minute undulata ; epidermide luteo-fusca, valde radiata ; dentibus cardinalibus 

 erectis, compressis, acuminatis ; lateralibus subrectis sublongisque ; margarita 

 vel albd vel purpurea vel salmonis colore tincta. 



Hab. Streams near Columbus, .Georgia. Bishop Elliott ; and French Broad 

 River, Tenn., Mr. Joseph Clark. 



Unio intercedens. Testa laevi, elliptica, subinfiata, valde inaequilaterali, pos- 

 tice subangulata; valvulis subcrassis ; natibus prominulis ; epidermide tenebroso- 

 fusca, postice radiata, antice subsulcata j dentibus cardinalibus parvis, angn- 

 latis, in utroque valvulo duplicibus ; lateralibus longis, lamellatis subrectisque ; 

 margarita purpurea. 



Hab. Streams near Columbus, Georgia. Bishop Elliott. 



Unio excavatus. Testa laevi, subtriangulari, valde inflata, subaequilaterali, 

 postice angulata ; valvulis subcrassis, antice crassioribus ; natibus valde pro- 

 minentibus et tumidis ; epidermide vel lutea vel luteo-oliva, polita, radiata, 

 antice subsulcata; dentibus cardinalibus magnis, erectis, conico-compressis, 

 crenulatis, in utroque valvulo duplicibus ; lateralibus subbrevibus, lamellatis 

 crassisque ; margarita alba et iridescente. 



Hab. Othcalooga Creek, Gordon County, Georgia; Bishop Elliott; and 

 Etowah, Georgia, Rev. Geo. White. Alabama river, Claiborne, Alabama, Judge 

 Tait. 



Unio eadians. Testa laevi, elliptica, subinfiata, inaequilaterali, postice rotun- 

 data ; valvulis subtenuibus, antice crassioribus ; natibus prominulis, ad apices 

 undulatis ; epidermide lutea, polita, valde radiata ; dentibus cardinalibus sub- 

 grandibus, erectis, subconicis crenulatisque ; lateralibus sublongis, lamellatis 

 subrectisque ; margarita vel alba vel rosacea et valde iridescente. 



Hab. Othcalooga Creek, Gordon county, Georgia. Bishop Elliott. 



Unio uubellinus. Testa plicatd, transversa, subtriangulari, subinfiata, valde 

 inaequilaterali, postice acute angulata, antice rotundata ; valvulis subcrassis, 

 antice crassioribus ; natibus prominulis, ad apices undulatis ; epidermide rubi- 

 uscula, nitida ; dentibus cardinalibus parvis, erectis acuminatisque ; lateralibus 

 longis lamellatis subrectisque ; margarita rubida et iridescente. 



Hab. Othcalooga Creek, Gordon county, Georgia. Bishop Elliott. 



Unio umbrosus. Testa laevi, elliptica, ventricosa, subaequilaterali, postice 

 obtuse angulata, compressa et emarginata ; valvulis crassis, antice crassiorir 

 bus ; natibus prominulis ; epidermide tenebroso-fusca, postice obsolete radiata ; 

 dentibus cardinalibus subgrandibus, erectis, obtuso-conicis ; lateralibus sub- 

 longis, subrectis subcrassisque ; margarita tenebroso-purpurea et iridescente. 



Hab. Othcalooga Creek, Gordon county, Georgia. Bishop Elliott. 



Unio apicinus. Testa laevi, elliptica, subcompressa, subaequilaterali, postice 

 obtuse angulata ; valvulis subtenuibus ; natibus prominulis, ad apices regu- 

 lariter et decore undulatis ; epidermide fusco-lutescente, radiis minutis induta ; 

 dentibus cardinalibus parvulis, obliquis, compressis, subacutis crenulatisque ; 

 lateralibus sublongis, lamellatis subcurvisque ; margarita albida et iridescente. 



Hab. Othcalooga Creek, Gordon county, Georgia. Bishop Elliott. 



Unio Othcaloogensis. Testa laevi subtriangulari, ventricosa, subaequilate- 

 rali ; valvulis crassis, antice crassioribus, natibus subgrandibus, ad apices un- 

 dulatis ; epidermide lutescente, perlaevi, nitida, eradiata ; dentibus cardinalibus 

 crassis, obliquis, crenulatis et in utroque valvulo duplicibus; lateralibus brevibus 

 subrectisque ; margarita alba et iridescente. 



Hob- Othcalooga Creek, Gordon county, Georgia. Bishop Elliott. 



[Feb. 



