58 NEW YORK STATE MUSEUM 



Physa heterostropha Say. Walton, Rochester Acad. Sci. Proc. 



1892. 2:12. (Rochester) 

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



1901. p.245. (Goat island. Post-Pliocene) 



Physa Integra Haldeman 

 P h y s a n i a g a r e n si s Lea. Lea, Obs. Genus Unio. 1864. 11:129. 



(Niagara river) 

 Physa niagarensis Lea. Tryon, Am. Jour. Conch. 1865. 1:168. 



(Niagara river) 

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



1874. p. 1 36. (Niagara river) 

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



p.i36 

 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.8o. 



(Lake Champlain) 



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

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

 Physa elongata Say. Jay, Cat. 1852. p.27i 

 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. p4 

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



1874. p. 136 



Bulinus hypnorum Linn. Beauchamp, Onondaga List. 1886. p. 4 

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



1892. 2:13. (Pittsford) 



Subfamily FI^ANORBINAE 



Genus PLANORBIS Guettard 



Planorbis campanulatus Say 



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



p.6i. (Western New York) 

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



