73 



Alasmodontaradiata,Co7irac?, 

 sculptilis, Saij, 

 truncata, Say, 

 undulata, Say, 



Unio calceolus, 



Lea, 



A N D O N T A . 



Anodonta cataracta, Say, marginala, Say, 



declivis, Conrad, 

 grandis, Say, 

 implicata, Say, 

 imbecillis.Sa;/, 

 inflata, Say, 

 lugubris, Say, 

 subvexa, Conrad, 

 suborbicu- 



lata, Say, 

 undulata, Say, rugosa, Swainson. 



OBSERVATION. 



I stated that a variety of Unio declivis, Sav, liad been found 

 in East Florida, but I have since ascertained that it is a dis- 

 tinct species. 



