84 PBOCEEDINaS OP THE ACADEMY OF 



Description of Eight New Species of NAI&DES from various parts of the United 



States. 



BY ISAAC LEA. 



Unio pinguis. Testa laevi, elliptica, inflata, valde inaequilaterali ; valvulig 

 subcrassis ; natibus prominentibus, retrorsis ; epidermide luted, obscure radiata 

 etpolita; dentibus cardinalibus submagais, duplicis, acuminatis crenulatisque; 

 lateralibus magnis, lamellatislongis curvisque; margarita alba et indescente. 



Hab. St. Peter's River, Upper Mississippi. B. W. Budd, M.D. 



Unio Hiqginsii. Testa Isevi, obliqua, ventricosa, valde inaequilaterali, antice 

 rotundata ; valvulis percrassis; natibus valde prominentibus, tumidis iocur- 

 visque; epidermide virido-oliva, polita, valde radiata; dentibus cardinalibus 

 magnis, crassis, erectis, crenulatis, in utroque valvule duplicibus ; lateralibus 

 sublongis, percrassis subrectisque ; margarita vel alba vel salmonis colore 

 tincta. 



Hab. Muscatine, Iowa. Frank Higgins. 



Unio Abbevillensis. Testa laevi, oblongS,, subinflata, ad'lateris planulatis, valde 

 inaequilaterali, postice biangulata ; valvulis crassis ; natibus prominulis ; epider- 

 mide brunnea, striata ; dentibus cardinalibus magnis, crassis, in utroque valvule 

 duplicibus ; lateralibus praelongis, lamellatis subcurvisque ; margarita vel alba 

 vel salmonis colore tincta. 



Hab. Abbeville District, South Carolina. Dr. Barratt. 



Unio Jamesianos. Testa laevi, elliptica, compressa, valde inaequilaterali, postice 

 valde compressa ad basim emarginata ; valvulis subcrassis ; natibus prominu- 

 lis, ad apicem concentraliter undulata; epidermide lutea, polita; dentibus 

 cardinalibus compressis, crenulatis; lateralibus longis, lamellatis valde cur- 

 visque ; margarita alba et iridescente. 



Hab. Jackson, Mississippi. U. P. James. 



Unio Texasiensis. Testa laevi, elliptica, subcompressa, valde inaequilaterali, 

 postice subangulata ; valvulis subtenuibus, antice crassioribus ; natibus pro- 

 minulis, ad apices pereleganter et concentrice undulatis ; epidermide tenebroso- 

 oliva, polita, obsolete radiata ; dentibus cardinalibus parvis, compressis, erectis 

 crenulatisque; lateralibus longis, lamellatis subcurvisque ; margarita ccerulea 

 et valde iridescente. 



Hab. Dewitt County, Texas. W, Newcomb, M. D. 



Anodonta Lewisii. Testa laevi, elliptica, subventricosa, inaequilaterali, postice 

 obtuse angulata, antice rotundata ; valvulis subtenuibus ; natibus prominulis, 

 ad apices rugoso-undulatis ; epidermide tenebroso-olivacea, eradiata; marga- 

 rita cceruleo-alba et iridescente. 



Hab. Erie Canal and Mohawk River, Herkimer Co., N. Y. James Lewis, M. D. : 

 and Genesee River, below Rochester. Prof. C. Dewey. 



Anodonta laodstris. Testa laevi, transversa, subinflata, valde insequilaterali 

 postice subangulata ; valvulis tenuibus ; natibus prominulis, ad apices crebri 

 undulatis; epidermide luteo-olivacea, eradiata, transverse vittata ; margarita 

 vel alba vel crocea et iridescente. 



Hab. Crooked Lake and Little Lakes, New York. James Lewis, M. D. 



Anodonta modesta. Testa Itevi, elliptica, subinflata, valde inaequilaterali, 

 aubemarginata, antice obtuse angulata ; valvulis subcrassis, postice crassior- 

 ibus ; natibus subprominentibus, ad apices undulatis ; epidermide olivacea, 

 transverse vittata et obsolete radiata; margarita argentea et valde iridescente. 



Hab. Pond near Kalamazoo, Mich. J. Lewis M. D. 



[March 



