walker: shells of Michigan. 329 



Helix multilineata Say. 



H. ,, var. unicolor. Currier. 



H. ,, var. albina. 



H. elevata Say. Cited in all the catalogues. I have 

 never found living specimens in the eastern part of the state. It 

 occurs in the recent deposits at Ann Arbor, and the history of the 

 species there seems to be the same as that of H. solitaria. 



Helix exoleta Binn. 



H. thyroides Say. 



H. clausa Say. Miles, Currier. 



H, profunda Say. 



H. ,, var. albina. 



H. Sayii Binn. Miles, Currier. 



H. pulcheila Mull. 



Ferussacia subcylindrica L. 



Pupa pentodon Say. 



P. fallax Say. 



P. arnnifera Say. 



P. contracta Say. 



Vertigo Gouldii Binn. 



V. milium Old. 



V. ovata Say. 



V. simplex Old. 



Succinea oval is Gld, not Say. 



S. Higginsi Bid. I have received specimens under this name 

 from Alpena, Michigan. They lack the characteristic parietal 

 tooth and may not be authentic. As the type specimens were 

 found at Put-in-Bay Island, Lake Erie, it is very probable that 

 the species occurs in this state. 



S. Peoriensis Wolf This species, which occurs very 

 abundantly in the eastern portion of the state, is not mentioned 

 in W. G. Binney's last volume, and I do not know whether any 



