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Genus Helicodiscus Morse. 

 Helicodiscus lineatus Say. 



Oregon, Ogle Co. (Baker) ; Cook Co. (Baker, Higley, Jensen, 

 Lyon, Nason, Woodruff) ; Cook Co. ; Northern Illinois (Calkins) ; 

 La Salle Co. (Calkins, Huett) ; La Salle Co.; Joliet, 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 PUNCTINjE. 



Genus Punctum Morse. 



Punctum pygmceum Draparnaud. 



Joliet, Will Co. ; Huntley, McHenry Co. (Ferriss) ; Joliet, 

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

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



Genus Sphyradium Charpentier. 



Sphy radium edentulum Draparnaud (= Vertigo simplex Gould). 



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



*Stenolrema hneata Say is recorded by Wolf from Fulton County. Helicodiscus lineatus 

 is probably what was meant. (See Am. Journ. Conch., VI., p. 27.) 



