16 The American Naturalist. [j 



Family Achatixid.k. 

 Genus Ferrusaacia Etisso. 



F. subcylindrica Linn. 



Not yet discovered in any numbers. A few isolated 

 mens only have been collected. 



Family Pupid^e. 

 Genus Pupa Lam. 

 P. pentodon Say. 



Most or all of the specimens I have seen are what is k 

 as P. curvidens Gld. I have no doubt that both forms 

 in the county. It is extremely variable and 1 do not wit 

 present knowledge regard the latter as a distinct specie 

 is a common species and is found in localities very differt 

 character. 

 P. contracta Say. 



Common in wet places under decaying wood. 

 P. corticaria Say. 



Inhabits bark of decaying logs as its name indi 

 Quite rare here; I have only found six specimens in ten < 

 Pupa edentula Drap.= Vertigo simplex Gould. 



Not common. Attached to decaying wood and \ 

 leaves. Best time for collecting this species is late' in tin 

 P. alticola Ing. is probably identical with this. 



Genus Vertigo Muller. 

 V. bollesiana Morse. 



In swamps. Rare. 

 V. ovata Say. 



Rather common in wet places on logs and sometimes st 

 V. milium Gould. 



leates Undant ^ "*" ^^ ° n deca ? in g wood and ar 

 Family Succixud.k. 

 Genus Succinea Drap. 



S. ovalis Gould. 

 Very common. 



