MOLLUSCA OF NEW YORK 39 



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



Bald mountain) 



Mesodon thyroides Say. Tryon, Am. Jour. Gonch. 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. Lye. N. Y. 1870. 



9:403. (Long Island) 

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



1874. p.i3[ 



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.^.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. Lye. 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. 



3:56 



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

 8:120 



