178 



BIBLIOGRAPHY OP 



Page. Name. 



53 Nucula Cascoensis Mighels. 



53 delphinodonta Mighels. 



53 lenticula Moll. 



53 limatula Say, 



53 macilenta Stp. 



53 minuta Gmelin. 



N. tenuisulcata Couth. 



53 var. 



53 myalia Couth. 



53 navicularis Couth. 



53 Portlandica Hitch, (fossil). 



53 proxima Say. 



53 sapotilla Gould. 



53 tenuis Turton, Gray. 



N. lucida Blanding. 



53 Thraciaeformis Storer. 



Locality. 

 Casco bay. 

 Casco bay. 

 Greenland. 

 Rhode Island. 

 Greenland. 

 Massachusetts. 



Greenland. 

 Massachusetts bay. 

 Maine. 

 Maine. 



Massachusetts bay. 

 Cape Cod. 

 Maine, Greenland. 



Cape Cod. 



Family Naiades. 



54 tTnio acutissimua Lea. 



54 alatus Say. 



Symphynota alata Lea, 

 Var. U. megaptera Raf. 



54 altilis Conrad. 



54 angustatus Lea, 



54 apiculatus Say. 



rar. If. asper Lea. 



55 arctior Lea. 



U. dilatatus? Raf. 

 55 atrocostatus Lea. 



55 biangulatus Lea. 



55 Blandingianus Lea. 



55 Boydianus Lea. 



55 bullatus Raf. 



U. pustulosus Lea. 



var. U. Dorfeuillanus Lea. 



Schoolcraftensis Lea. 

 prasinus Conrad. 

 55 caelatus Conrad. 



55 callosus Lea. 



55 camptodon Say. 



55 capax Green. 



U. globosus Lea. 

 55 Capsseformis Lea. 



Alabama river. 



Fox river. 



Detroit riv., N. West'n 



Territory, Ohio. 

 Alabama river. 

 Congaree river. 

 New Orleans. 

 Alabama river. 

 Ohio river. 



Alabama. 

 Tennessee. 

 Florida. 

 New York. 

 Ohio. 



Tennessee. • 

 Ohio canal. 

 New Orleans. 

 Louisiana. 



Cumberland river. 



