24 NEW YORK STATE MUSEUM 



Paludina integra Say. Aldrich, Troy List. 1867. p.3 

 Paludina rufa Hald. Aldrich, Troy List. 1867. p.3. (Mohawk 

 basin) 



Paludina decisa Say. Smith & Prime, An. Lyc. N. Y. 1870. 



9:392. (Jamaica L. I.) 

 Melantho decisus Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874* 



P-I37 



Melantho integer Say. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874. 

 P-I37 



Melantho rufus Hald. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 1874. 

 p.137. (Buffalo) 



Melantho decisus Say. Beauchamp, Onondaga List. 1886. p. 5 

 Melantho rufus Hald. Beauchamp, Onondaga List. 1886. p. 5. 

 (Baldwinsville) 



Melantho decisa Say. Walton, Rochester Acad. Sci. Proc. 1892. 

 2:5. (Erie canal) 



Melantho rufa Hald. Walton, Rochester Acad. Sci. Proc. 1892. 

 2:5. (Erie canal) 



Melantho decisa var. obesa Lewis. Walton, Rochester Acad. 



Sci. Proc. 1892. 2:5. (Erie canal) 

 * Melantho decisa var. genicula Conr. Walton, Rochester 



Acad. Sci. Proc. 1892. 2:5. (Erie canal) 

 Melantho decisa var. integra Say. Walton, Rochester Acad. 



Sci. Proc. 1892. 2:5. (Erie canal) 

 Melantho decisa var. heterostropha Kirt. Walton, 



Rochester Acad. Sci. Proc. 1892. 2)5. (Erie canal) 

 Campeloma decisa Say. Letson, N. Y. State Mus. Bui. 45. 



1901. p. 243. (Goat island. Post-Pliocene) 



Genus lioplax Troschel 

 Lioplax subcarinata Say 



Lioplax subcarinatus Say. Beauchamp, Onondaga List. 1886. 

 p. 5. (Erie canal) 



Order SCUTI B R ANCHI ATA 

 Suborder POD OPTH ALMA 

 Family trochidae 

 Genus Margarita Leach 

 Margarita ornata DeKay 

 Margarita ornata DeK. DeKay, Nat. Hist. N. Y. 1843. p. 107 



