MOLLUSCA OF NEW YORK 



35 



Helicodiscus lineatus Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 

 1874. p. 130 



Helicodiscus lineatus Mse. Beauchamp, Onondaga List. 

 1886. p.i 



Helicodiscus lineatus Say. Walton, Rochester Acad. Sci. 



Proc. 1892. 2:8. (Monroe county) 



Helicodiscus lineatus Say. Pilsbry, List Naut. 1898. p. 33 



Genus polygyra Say 

 Polygyra tridentata Say 



Helix tridentata Say. DeKay, Nat. Hist. N. Y. 1843. p.28 

 Helix tridentata Say. Jay, Cat. 1852. p.181 

 Helix tridentata Say. Aldrich, Troy List. 1867. p.6 

 Triodopsis tridentata Say. Tryon, Am. Jour. Conch. 1867. 3:50 

 Helix tridentata Say. Binney, Smith. Misc. Coll. 194. 

 1869. 8:129 



Helix tridentata Say. Smith & Prime, An. Lyc. N. Y. 1870. 



9:380. (Staten Island) 

 Triodopsis tridentata Say. Lewis, Buf. .Soc. Nat. Sci. Bui. 2. 



1874. p.131 



Helix tridentata Say. Beauchamp, Onondaga List. 1886. p.i 

 Triodopsis tridentata Say. Walton, Rochester Acad. Sci. 



Proc. 1892. 2:7. (Rochester) 

 Polygyra tridentata Say. Pilsbry, List Naut. 1898. p. 10 



Polygyra tridentata juxtidens Pilsbry 

 Polygyra juxtidens Pils. Pilsbry, List Naut. 1898. p. 10. 

 (Southern New York) 



Polygyra fraudulenta Pilsbry 

 Helix fallax Say. DeKay, Nat. Hist. N. Y. 1843. P- 28 

 Helix fallax Say. Jay, Cat. 1852. p. 138 



Triodopsis fallax Say. Tryon, Am. Jour. Conch. 1867. 3:51 

 Helix fallax Say. Binney, Smith. Misc. Coll. 194. 1869. 8:131 

 Triodopsis fallax Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874. 



P-I3 1 



Triodopsis fallax Say. Walton, Rochester Acad. Sci. Proc. 



1892. 2:7. (Rochester) 

 Polygyra fraudulenta Pils. Pilsbry, List Naut. 1898. p.io 



Polygyra inflecta Say 



Isognomostoma inflecta Say. Tryon, Am. Jour. Conch. 

 1867. 3:54 



