OF CONCHOLOGY. 



29 



Lea. 



u 

 a 



u 

 u 

 a 



u 



U. ellipsis, 



" elegans, 



*' ebenus, 



" securis, 



" spatulatus, 



" donaciformis, 



" iris, 



" zig-zag, 



" anodontoides, 



" tenuissimus, 



" trigonus, 



"' tuberculatus, 



" Dorfeuillianus, 



" occidens, 



" coccineus, " 



" rubiginosus, " 



•' solidus, " 



" asperrimus, " 



" laevissimus, " 



" Cooperianus, " 

 " inflatus, " 



" neglectus, " 



" monodontus, Say. 

 " alatus, " 



" undulatus, Barnes. 

 " gibbosus, " 



" ligamentinus, Lam. 

 " gracilis, Barnes. 



U. cornutus, Barnes. 



" triangularis, " 

 " parvus, " 



" fragosus, Conrad. 

 " luteolus. Lain. 

 " crassidens, Lam. 

 " rectus, " 



" capax. Green. 

 " metanever, Raf. 

 " orbiculatus, SUd. 

 " ^sopus, Green. 

 " plicatus, Leseur. 



MARGARITA.NA, Schum, 



M. confragosa, Lea. 

 " complanata, " 

 " rugosa, " 



" marginata, " 

 " deltoidea, " 



ANODONTA, Lam. 



A. corpulenta. Cooper. 

 " grandis. Soy. 

 " ovata, Lea. 

 " subcarinata, Currier. 

 " suborbiculata, Say. 

 " imbecillis, " 



" edentula, Lea. 



