NORTH AMERICAN CONCHOLOGY. 



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Name. 

 Unio carbonarhis Lea, 

 U. pliciferus Lea. 



var. U. plexus Conrad. 



semigranosa Busch. 

 eardrum Raf, 

 U. occidens Lea. 

 var. U. ventricostts Barnes, Say. 

 subovaius Lea. 

 cariosus Sag, 

 U. ovata Valenc. 

 var. U. luteolus Lam. 

 castaneus Lea, 

 cerinus Conrad, 

 cicatricostis Say, 

 U. varicosus Lea. 

 Claibornensis Lea, 

 clavus Lam. 



U. Modioliformis Say. 

 var. U, s'calenins Raf. 

 cuneatus Raf. 

 patulus Lea. 

 COCCine\is Lea, 

 U. rubra? Raf. 

 var. U. catillus Conrad. 



Gouldianus? Ward, 

 collimis Conrad, 

 complanatus Soland. 

 Mga complanata Soland. 

 var. U, violaceus Spengler. 

 jmrpnreus Say. 

 rarisulcata Lara. 

 coarctata Lam. 

 purpurascens Lam. 

 rhombula Lam. 

 carinifera Lam. 

 Georgina Lam. 

 rjlabrata Lam. 

 sulcidens Lam. 

 fluviatilis Green. 

 Mga rigida Wood, 

 compiessus Lea, 



Sgmphynota compressa Lea. 

 confertus Lea. 

 Congarseus Lea, 



Locality. 

 Medellin river. 



Mexico. 



Ohio river. 



Passaic river. 



Hudson river & Conn. 

 Alabama river. 

 Louisiana. 

 Ohio river. 



Alabama. 

 Wabash river. 



Ohio river. 



Mahoning river. 



Ohio river. 



N. river, Va. 

 Maryland. 



New Jersey. 

 Yadkin river. 

 Lake Champlain. 

 Virginia. 

 New York. 

 Hudson river. 

 Connecticut. 

 Lake George. 

 Massachusetts. 

 Connecticut. 

 Pennsylvania. 

 Rhode Island* 

 New York. 



Santee canal, S. C. 

 Congaree river. 



