1891] WALTON — MOLLUSCA OF ]\[ONROE COUNTY. 5 



Melantho decisa, Say. (pi. 3, fig. 4-7-) Erie- canal. 

 Melania ovular is. Mice. 

 Paludina Iwiosa, YaX. 



" viicrostofna, Kirt. 

 " cornea, Val. 

 " iieros, De Kay. 

 " subsolida, Anth. 

 " decapita, Anth. 

 " milesii, Lea. 

 Melantho decisa var. obesa, Lewis, (pi. 3, fig. 9.) Erie canal, 

 Melantho decisa var. genicula, Con. (pi. 3, fig. n, 12.) Erie 

 canal. 



Melantho deciso var. Integra, Say. (pi. 3, fig. 13.) Erie canal. 

 Melantho decisa var. heterostropha, Kirt. (pi. 3, fig. 10.) 

 Erie canal. 



Melantho rufa, Hald. (pi. 3, fig. 8.) Erie canal. 



Family VITRINID^. 



Vitrina limpida, GId. (pi. 2, fig. n.) Fittsford. 

 Vitrina pellucida, De Kay. 

 " Americana, Pfr. 



Family SELENITIDiE. 



Macrocyclis concava, Say. Pittsford. 

 Helix planorboides. Far. 

 " dissidens, Desh. 



Family ZONITIDiE. 



Zonites fuHginosa, Grifi:. Rochester. 

 Helix capillacea, Pfr. 

 Onphalina ciiprea, Raf. 

 Hyalina fuliginosas, Tryon. 



Zonites intertexta, Bin. Fittsford. 



Mesoinphix intertexta, Tryon. 

 Hyalina " Bin. 



Zonites inornata, Say. Fittsford. 

 Helix glaphyra, Pfr. 



" inornata, Bin. 

 Hyalina " Tryon. 



