MOLLUSCA OF NEW YORK 91 



Margaritana undulata Say. Beauchamp, Onondaga List. 1886. 



p. 8. (Erie canal) 

 Alasmidonta undulata Say. Simpson, Nat. Mus. Proc. 1900. 



22:667 



Alasmidonta calceola Lea 



Margaritana deltoidea Lea. Walton, Rochester Acad. Sci. 



Proc. 1892. 2:17. (Erie canal) 

 Alasmidonta calceola Lea. Simpson, Nat. Mus. Proc. 1900. 



22:668 



Alasmidonta calceola Lea. Letson, N. Y. State Mus. Bui. 45. 

 1901. p. 250. (Goat island. Post- Pliocene) 



Alasmidonta heterodon Lea 



Unio heterodon Lea. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874. 

 p.141 



Alasmidonta heterodon Lea. Simpson, Nat. Mus. Proc. 1900. 

 22:669 



Alasmidonta marginata Say 



Alasmodon marginata Say. DeKay, Nat. Hist. N. Y. 1843. 



P i9 6 



Alasmodon corrugata DeKay. DeKay, Nat. Hist. N. Y. 

 1843. p.198 



Margaritana marginata Say, Jay, Cat. 1852. p. 69 

 M a r g ar i t a n a m a r g i n a t a Say. Aldrich, Troy List. 1867. p. 2. 

 (Northern canal) 



Margaritana marginata Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 

 1874. p.141 



Margaritana marginata Say. Beauchamp, Onondaga List. 

 1886. p. 7 



Margaritana marginata Say. Walton, Rochester Acad. Sci. 



Proc. 1892. 2:17 (Erie canal) 

 Alasmidonta marginata Say. Simpson, Nat Mus. Proc. 1900. 



22:670 



Alasmidonta truncata B. H. Wright 

 Alasmidonta truncata Wright. Simpson, Nat. Mus. Proc. 1900. 

 22:671 



Genus hemilastena Agassiz 

 Hemilastena ambigua Say 



Margaritana hildrethiana Lea. Lewis, Buf. Soc. Nat. Sci. 



Bui. 2. 1874. p.141. (Buffalo creek) 

 Hemilastena ambigua Say. Simpson, Nat. Mus. Proc. 1900. 



22:673 



