MOLLUSCA OF NEW YORK 39 



Helix thyroidus Say. Aldrich, Troy List. 1867. p. 6. (Near 

 Bald mountain) 



Mesodon thyroid es Say. Tryon, Am. Jour. Conch. 1867. 3:41 

 Mesodon bucculenta Gld. Tiyon, Am. Jour. Conch. 1867. 3:41 

 Helix thyroides Say. Binney, Smith. Misc Coll. 194. 1869. 

 8:147 



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



9:403. (Long Island) 

 Mesodon thyroides Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 



1874. p.131 



Helix thyroides Say. Beauchamp, Onondaga List. 1886. p. 2 

 Mesodon thyroides Say. Walton, Rochester Acad. Sci. Proc. 



1892. 2:7. (Rochester) 

 Polygyra thyroides Say. Pilsbry, List Naut. 1898. p. 13 



Polygyra clausa Say 



Helix clausa Say. DeKay, Nat. Hist. N. Y. 1843. P-3 1 

 Helix clausa Say. Binney, Smith. Misc. Coll. 194. 1869. 8:149 

 Polygyra clausa Say. Pilsbry, List Naut. 1898. p 13 



Polygyra hirsuta Say 



Helix hirsuta Say. DeKay, Nat. Hist. N. Y. 1843. p. 36 

 Helix hirsuta Say. Jay, Cat. 1852. p. 144 

 Stenotrema hirsuta Say. Tryon, Am. Jour. Conch. 1867. 3:57 

 Helix hirsuta Say. Binney, Smith. Misc. Coll. 194. 1869. 

 8:118 



Helix hirsuta Say. Smith & Prime, An. Lyc. N. Y. 1870. 9:380. 



(Westchester county) 

 Stenotrema hirsuta Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 



1674. p.131. (New Hartford) 

 Stenotrema hirsuta Say. Walton, Rochester Acad. Sci. Proc. 



1892. 2:7. (Rochester) 

 Polygyra hirsuta Say. Pilsbry, List Naut. 1898. p. 14 



Polygyra monodon Racket 

 Helix monodon Rack. DeKay, Nat. Hist. N. Y. 1843. p. 35. 

 (Troy) 



Helix monodon Rack. Aldrich, Troy List. 1867. p. 5. (Troy) 

 Stenotrema monodon Rack. Tryon, Am. Jour. Conch. 1867. 

 3:5 6 



Helix monodon Rack. Binney, Smith. Misc. Coll. 194. 1869. 

 8:120 



