OF NORTH AMERICA. 



329 



MICHIGAN: Saginaw River, Saginaw Co. (Walker). 



NEW YORK: Mohawk, Herkimer Co. (Nason). 



OHIO: Poland, Mahoning Co.; La Grange, Lorain Co. (Walker); Akron, 

 Summit Co. (Walker). 



WISCONSIN: Milwaukee, Milwaukee Co. (Lea). 



GEOLOGICAL RANGE: Unknown. 



ECOLOGY : In small creeks, ditches and along the shores of rivers ; 

 habits similar to those of elodes. 



REMARKS: Galba elodes jolietensis may be known by its sharp, 

 attenuated spire, very convex whorls and elongated aperture. It varies 



Distribution of 

 JOLIETENSIS v 

 SHURTLEFFI ' 



too 



FIG. 36. 



somewhat, some specimens having flatter whorls than the types, with 

 shallow sutures. From Lea's description, and from some specimens 

 named by him, it was at first thought to be a form of kirtlandiana, 

 but an examination of Lea's type in the Smithsonian Institution shows 

 that it is not that species. 



This race was first described as a variety of reflexa, but an ex- 

 amination of additional material shows it to be related rather to elodes. 

 Some of the Joliet specimens are much wider than the type, with less 

 conspicuous sutures, clearly showing the relationship of the race to 

 elodes. (See plate XXXIV, figures 29-30.) Jolietcnsis is a neat little 



