SECTION A.] NORTH AMERICAN CONCHOLOGY. 



625 



No. 





No. 





154 



Anodonta cataracta Say. 



158^- 



Alasmodonta ambigua Say 





A. exilis Lea. 





Unio Hlldrethianus Lea 





salmonea Lea. 



159 



calceola Lea. 





Peptniana Lea. 





A. deltoidea Lea. 



155 



Ferrusaciana Lea. 



160 



complanata Barnes. 



156 



graudis Say. 



161 



costata Raf. 





A. plana Lea. 





A. rugosa Barnes. 





decora Lea. 



162 



edentula Say. 





gigantea Lea. 





Anodonta undulata Say. 



157 



imbecillis Say. 





areolata ? Sw. 





A. incerta Lea. 





rugosa ? Swains 



158 



lata Raf. 





Wardiana Lea. 





Unio dekiscens Say. 





pavonia Lea. 





oriens Lea. 





BnchanensishQa,, 







163 



truncata Say. 



Say, Conrad, Toiimey, Holmes, Morton, &c.— 



In the various publications which have appeared on the fossil 

 Shells of America will be found information regarding many 

 species supposed to be identical with recent species. 



MFrs. Sheppardj of Woodfiold, on the recent Shells which 

 characterize Quebec and its environs. (From Transactions of 

 the Literary and Historical Society of Quebec, vol. i, p. 188. 

 Quebec, 1829.) 



[Descriptions of genera and species are given. — W. G. B.] 



Page 





Page 





189 



Solen . 



195 



Planorbis spirorbls. 



190 



Mya arenaria. 



195 



alba? 



190 



Venus mercenaria. 





ILdix alba Linn 



191 



Unio sinuata. 



195 







.191 



radiata. 



195 



Physa fontinalis. 



191 



nanca. 



195 



subopaca. 



192 



Modiola plicatula. 



196 



Lymnaea stagnalis. 



192 



Mytelus borealis. 



196 



palustris. 



192 

 193 



Ostrea canadensis. 

 Crepidula fornlcata. 



196 

 196 



T.i_i_. J. 







193 



Helix hortensls. 



197 



Natica magdalena. 



194 

 194 

 194 





197 

 193 





Carocolla dubla. 

 Succinea amphibia. 



dXLrOii-iUi-LA • 







40 







