THE FAMILY J\'AIADE>s 



39 



;^ 



o 



•—I 



o 

 K 



o 



o ' 



WIDE. 



arctior. Lea. 



Vaup;hanianus. Lui. 



Unio Carolincnsis. Prof. RavencVs leller. 



OBOVATE. 



purpuratus. Lam. 



My a ventricosa. ' Solan. HumpJireijs? 

 Unio ater. Lea. 

 Unio lugubris. Say. 

 Unio Poulsoni. Con. 



rhombeus. Wag. 



Diplodon rhombeum. Splx. 



cuprinus. Lea. 



Unio metallicus.t Say. 



modioliformis. Lea. 

 Unio delumbis. Con. 



tenerus. Rav. 



Unio tenebrosus. Con. 



Tappanianus. Lea. 



stramineus. Con. 



* On the authority of Ferussac. 



f Mr. Say in his " Synonymy" claims precedence. My Memoir bears the 

 date of May 7, 1830; his that of January 1, 1831. 



