NORTH AMERICAN CONCHOLOGY. 



59 



[Hanley, Descriptive Catalogue.] 







Page. 



Name. 





Locality. 



206 



Unio tenuissimus Lea. 



Symph. tenuissima Lea. 

 U. purpurascens Swains. 

 velum Say. 





Ohio. 



207 



phaseolus Hild. 

 U. planulatus Lea. 





Ohio. 



207 



arcus Conr. 





Alabama river. 



207 



arctatus Conr. 





Alabama river. 



207 



gibbosus Barnes. 

 U. mucronatus Barnes. 

 nasuta Lam. 

 dilatatus Conr. 





North America. 



208 



arctior Lea. 





Ohio. 



208 



Vaughanianus Lea. 

 U. Carolinensis Rav. 





South Carolina. 



208 



purpuratus Lam. 

 U. ater Lea. 

 lugubris Say. 

 Poulsoni Conr. 





Mississippi. 



208 



cuprinus Lea. 

 U. metallicus Say. 





Mexico. 



209 



modioliformis Lea. 

 U. delumhis Conr. 





South Carolina. 



209 



tenerus Rav. 



U. tenehroms Conr. 





Virginia. 



209 



Tappanianus Lea. 





HoUidaysburg. 



209 



contradens Lea. 







209 



stramineus Conr. 





Alabama river. 



210 



monodontus Saij. 

 U. soleniformis Lea. 





Ohio. 



210 



complanata (Alasrn.) Barnes. 



Ohio. 





Sijmph. complanata Lea. 







210 



confragosa Say. 





North America. 





Alusmodunta confragosa 



Say. 





210 



arcula Lea. 



^[argnritana arcula Lea 





Georgia. 



211 



marginata. 





Massachusetts. 





Margaritana marginata 



Lea. 







U. varicosa Lam. 









Mya riigulosa Wood. 









Alasmodonta marginata 1 



Say. 





211 



rugosa Barnes. 





North America. 





Alasmodonta rugosa Barnes. 







U. abducta Say. 







