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Genus Helicodiscus Morse. 

 HelicodiscMs lineotus Say. 



Oregon, Ogle ("o. (Baker): Cook Co. (Baker, Higlev, Jensen, 

 Lyon, Nasou. Woodruff) : Cook Co. : Xorthern Illinois (Calkins) : 

 La Salle Co. (Calkins. Huett) : La Salle Co. : .loliet. Will Co. 

 (Ferriss): Winnebago and Washington counties (Hinkley) : 

 Mercer Co. (Marsh); Elgin. Kane Co. : Algonquin, McHenry 

 Co. : Athens, Menard Co. (Nason) : Fulton Co. (Wolf)*: Havana, 

 Mason Co. (State Laboratory). 



Subfamily PUNCTIN^E. 



Genus PrxcTUM Morse. 

 Puiictum pygimeum Draparnaud. 



Joliet, Will Co.: Huntley, McHenry Co. (Ferriss) : .Toliet. 

 Will Co. (Handwerk) : Du Bois, Washington Co. (Hinkley): 

 Cook Co. (Jensen) : Will Co. (Marsh). 



Genus SPHTRADiry Charpeutier. 



Sphyradium edenti(b'm'Drsip?iTnaaii (= Vertigo simplex Gould). 



Eastern Illinois ( Marsh i: Canton, Fulton Co. ( Nason, Wolf). 



*Stei>olreina lineata Say is recorded by Wolf from Fulton County. Hflirt>ili.<cn.< linealuf 

 is probably what was meant. iSee Am. Joum. Conch.. VI., p. 27.) 



