NORTH AMERICAN CONCHOLOGY. 



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Descriptive Catalogue.] 



Name. 

 Unio catnelus Lea. 

 ovatus S(nj. 

 subovatus Lea. 

 crassidens Lam. 



U. niijvr Conr. 

 CHueatus Conr. 

 carbonarius Lea. 

 gibber Lea. 

 pumilus Lea. 

 rubiginosus Lea, 

 BarnesianuB Lea. 

 pileus Lia. 

 SoTverbianus Lea. 

 trigonus Lea. 

 Bolidus Lea. 

 obliquus Lam. 



U. undatus Baraes. 

 trigonus Say. 

 cordatus Conr. 

 pyramidatus Lea. 



U. mytiloides Raf. 



J/ya obliqua Wood. 

 Troostensis Lea. 



U. trabalis Conr. 

 TaitianuB Lea. 

 cor Conr. 

 decisus Lea. 

 clavus Lam. 



U. modioliformis Say. 

 scalenius Raf. 

 patulus Lea. 

 RavenelianuB Lea. 

 RangianuB Lea. 

 sulcatUB Lea. 



U. riidihtindus Say. 

 HaysianuB Lea. 

 ellipsis Lea. 



U. hrerialis Sowb. ? 

 castaneuB Lea. 

 TampicoensiB Lea. 

 Lecontiauus Lea. 

 perdix Lea. 

 pectorosuB Conr. 

 ventricosus Barnes. 



Locality. 

 Ohio. 

 Ohio. 

 Ohio. 

 North America. 



Mexico. 



Tennessee. 



North Carolina. 



Ohio. 



Tennessee. 



Ohio. 



Tennessee, 



Ohio. 



Ohio. 



North America. 



Ohio. 



North America. 



Alabama river. 

 Alabama river. 

 Alabama river. 

 North America. 



Ohio. 



Tennessee. 

 Ohio. 

 Ohio. 



North America. 

 Ohio. 



Alabama river. 



Mexico. 



Georgia. 



Tennessee. 



Tennessee. 



North America. 



