MOLLUSCA OF NEW YORK 63 



Ancylus rivularis Say 



Ancylus rivularis Say. DeKay, Nat. Hist. N. Y. 1843. p. 12 

 Ancylus rivularis Say. Binney, Smith. Misc. Coll. 143. 1865. 



7:142 



Ancylus rivularis Say. Beauchamp, Onondaga List. 1886. p. 4 

 Ancylus rivularis Say. Walton, Rochester Acad. Sci. Proc. 



1892. 2:13. (Genesee river) 



Ancylus tardus Say 



Ancylus tardus Say. Binney, Smith. Misc. Coll. 143. 1865. 7:143. 



(Mohawk river) 

 Ancylus tardus Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874. 



p. 137. (Little Lakes) 

 Ancylus tardus Say. Walton, Rochester Acad. Sci. Proc. 1892. 



2:13. (Irondequoit) 



Ancylus calcarius DeKay 



Ancylus calcarius DeK. DeKay, Nat. Hist. N. Y. 1843. p. 13 

 Ancylus calcarius DeK. Binney, Smith. Misc. Coll. 143. 1865. 



P-H3 



Ancylus borealis Morse 



Ancylus borealis Morse. Binney, Smith. Misc. Coll. 143. 1865. 

 7:156. (Patten) 



Genus GUNDLACHIA Pfeiffer 



Gundlachia stimpsoniana Smith 



Gundlachia stimpsoniana Smith. Smith & Prime, An. Lye. 

 N. Y. 1870. 9:399. (Long Island) 



Gundlachia sp. 



Gundlachia sp. J. M. Clarke, Am. Jour. Sci. 1882. ser. 3. 

 23:248. (Canandaigua) 



Class POLYPLACOPHORA 



Family ISCHNOCHITONIDJVE^ 



Genus CHAETOPLEURA Shuttleworth 



Chaetopleura apiculata Say 



Chiton apiculatus Say. DeKay, Nat. Hist. N. Y. 1843. p.i64 

 Chiton apiculatus Say. Jay, Cat. 1852. p.97 

 Chiton apiculatus Say. Smith & Prime, An. Lye. N. Y. 



1870. 9:392 

 Chaetopleura apiculata Say. Tryon, Man. Conch. 1892. 



