MOL-LUSCA OF NEW YORK 35 



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



1874. p.i3o 



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. 3 3 



Genus POLYGYRA Say 

 Polygyra tridentata Say 



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

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

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

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

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



1869. 8:129 

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



9:380. (Staten Island) 

 Triodopsis tridentata Say. Lev\ is, Buf. Soc. Nat. Sci. Bui. 2. 



1874. p.i3i 



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.io 



Polygyra tridentata juxtidens Pilsbry 



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

 (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 Siy. Binney, Smith. Misc. Coll. 194. 1869. 8:131 

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



P-J3 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 



Tsognomostoma inflecta Say. Tryon, Am. Jour. Cone IV. 

 1867. 3:54 



