undulata Say. Inflated, stout, rare. Canal. 



margaritif era L. Reported from Oneida lake. 

 Anodonta Benedictii. Lea. Large, inflated, green, thin. 



decora. Lea. Oval, green. Canal. 



edentula. Say. Thick, brown, beaks undulated. 



Ferussaciana. Lea. Cylindric, inflated. Canal. 



Footiana. Lea. Angular, inflated, rare. 



fluviatilis. Dill. Thin, green, variable, common. 



fragilis. Lam. Thin, inflated, fine. Lakes. 



imbecillis. Say. Cylindric, hinge margin straight. 



lacustris. Lea. Thin, brown. Lakes. 



Lewisii. Lea. Angular, variable, often large. 



pavonia. Lea. Thick, compressed. Canal. 



Pepiniana, Lea. Thin, compressed, greenish. 



Lakes. 



salmonia. Lea. Compressed, orange within beaks. 



subcylindracea. Lea. Small, cylindric, common. 



Simpsoniana. Lea. Thick, compressed, rare. 



Beaver Lake. 



undulata. Say. Like edentnla, compressed, green. 



Williamsii. Lea. Angular, nacre brilliant, rare. 



Seneca river. 



Of the foregoing but ten species have been found exclu- 

 sively south of the canal, while no land species are peculiar 

 to the northern towns. In water species the case is differ- 

 ent, for nearly seventy belong exclusively to the canal and 

 northern waters, many reaching us by the canals. 



Other shells are likely to occur in Onondaga county, 

 among which are the following : 



Helix dentifera. Binney. Medium, depressed, toothed. 

 Punctum minutissimum. Lea. Minute, subglobose. 

 Zonites cellarius. Muller. Glassy, greenish. 

 Sphaerium rhomboideum. Say. The name describes this. 

 Unio gibbosus. Barnes. Thick, compressed, gibbous. 

 Unio nasutus. Say. Smooth, long. 



