52 



p. Michigan. 



q. Virginia. 



r. South Carolina. 



s. Georgia. 



t. Florida. 



u. Minnesota. 



v. St. Ignace Island, Lake Superior. 



w. Cycfas minor, C. B. Adams. Wey bridge, Vt. (Ex 

 auctore.) 



x. Pisidium tenellum, Gould. Lake Superior. (Ex auctore.) 



y. Pisidium minus, Stimpson. Cambridge, Mass. (Ex 

 auctore.) 



z. Pisidium Kurtzii, Prime. Charleston, S. Ca. 



ai. Pisidium zonatum, Prime. Cambridge, Mass, 



bi. Pisidium regulate. Prime. Ohio, 



ci. Pisidium notatum, Prime. Washington Co., N. Y. 



di. Pisidium resartum Ingalls. Washington County, N. Y. 

 (Ex auctore.) 



ei. Pisidium vubrum, Lewis. Herdimer County, N. Y. (Ex 

 auctore.) 



fi. Pisidium plenum, Lewis. Otsego County, N. Y. (Ex 

 auctore.) 



gi. Pisidium Nov.-Eboracense, Prime. Western New York. 



hi. Pisidium amplum, Ingalls. Washington County, N. Y. 

 (Ex auctore.) 



