58 NEW YORK STATE MUSEUM 



Physa heterostropha S «y. Walton, Rochester Acad. Sci. Proc. 



1892. 2:12. (Rochester) 

 Physa heterostropha Say. Letson, N. Y. State Mus. Bui 45. 



1 90 1. p. 245. (Goat island. Post-Phocene) 



Physa integra Hademan 

 Physa niagarensis Lea. Lea, Obs. Genus Unio. 1864. n: 1 29. 

 (Niagara rivtr) 



Physa niagarensis Lea. Tryon, Am. Jour. Couch. 1865. 1:1 68. 

 (Niagara river) 



Physa niagarensis Lea. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 



1874. p. 136. (Niagara river) 

 Isodora integra Hald. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874. 



p.136 



Physa niagarensis Lea. Beauchamp, Onondaga List. 1886. 



p. 4. (Onondaga lake) 

 Physa niagarensis Lea. Crandall, Naut. 1901. 15:55. 



(Niagara river) 



Genus aplexa Leach 

 Aplexa hypnorum Linnaeus 

 Physa glabra DeK. DeKay, Nat. Hist. N. Y. 1843. p. 80. 



(Lake Champlain) 

 Physa elongata Say. DeKay, Nat. Hist. N. Y. 1843. P-8i 

 Physa hypnorum Linn. Jay, Cat. 1852. p. 271 

 Physa elongata Say. Jay, Cat. 1852. p. 271 

 Physa glabra DeK. Tryon, Am. Jour. Conch. 1865. 1:171 

 Bulinus hypnorum Linn. Binney, Smith. Misc. Coll. 143. 



1865. p.99 



Physa hypnorum Linn. Aldrich, Troy List. 1867. p. 4 

 Bulinus hypnorum Linn. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 

 1874. p.136 



Bulinus h y p n o r u m Linn. Beauchamp, Onondaga List. 1886. p. 4 

 Bulinus hypnorum Linn. Walton, Rochester Acad. Sci. Proc. 

 1892. 2:13. (Pittsford) 



Subfamily planorbinae 



Genus planorbis Guettard 

 Planorbis campanulatus Say 

 Planorbis campanulatus Say. DeKay, Nat. Hist. N. Y. 1843. 



p. 61. (Western New York) 

 Planorbis campanulatus Say. Jay, Cat. 1852. p. 267 



