i6 



NEW YORK STATE MUSEUM 



Pleurocera pallidum Lea 



Trypanostoma pallidum Lea. Lea, Obs. Genus Unio. 1862. 



9:97. (Niagara falls) 

 Pleurocera pallidum Lea. Tryon, Am. Jour. Conch. 1865. 



1:311. (Niagara falls) 

 Trypanostoma pallidum Lea. Lewis, Buf. Soc. Nat. Sci. 



Bui. 2. 1874. p. 139. (Niagara river) 

 Pleurocera pallidum Lea. Tryon, Smith. Misc. Coll. 253. 



1880. 16:112. (Niagara river) 

 Pleurocera pallidum Lea. Beauchamp, Onondaga List. 



1886. p. 6 



Pleurocera elevatum Say 



Melania elevata Say. Aldrich, Troy List. 1867. p. 4 

 Pleurocera elevatum Say. Tryon, Smith. Inst. Coll. 253. 

 1880. 16:95 



Genus goniobasis Lea 

 Goniobasis depygis Say 



Melania depygis Say. DeKay, Nat. Hist. N. Y. 1843. p. 89. 



(Lake Champlain, Hudson river) 

 Melania depygis Say. Stimpson, List. 185 1. p. 32. (Lake 



Champlain) 



Goniobasis depygis Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 



1874. p. 139. (Lake Champlain) 

 Goniobasis depygis Say. Beauchamp, Onondaga List. 1886. p. 6 

 Goniobasis depygis Say. Walton, Rochester Acad. Sci. Proc. 



1892. 2:4. (Irondequoit bay) 



Goniobasis livescens Menke 

 Melania livescens Mke. Jay, Cat. 1852. p. 274. (Lake Erie) 

 Goniobasis livescens Mke. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 



1874. p. 139. (Niagara river) 

 Goniobasis livescens Mke. Tryon, Smith. Misc. Coll. 253. 



1880. 16:248. (Lake Erie) 

 Goniobasis livescens Mke. Beauchamp, Onondaga List. 1886. 



p.6 



Goniobasis livescens Mke. Walton, Rochester Acad. Sci. 



Proc. 1892. 2:4. (Erie canal) 

 Goniobasis livescens Mke. Letson, N. Y. State Mus. Bui. 45. 



1901. p. 239. (Goat island. Post-Pliocene) 



