ANNOTATED CATALOGUE OF THE TERRESTRIAL 
MOLLUSCA OF MICHIGAN. 
1. ACANTHINULA HARPA (Say). 
A northern species. Charlevoix and Petoskey in the 
Grand Traverse region are the only localities reported. 
2. VALLONIA PULCHELLA (Miill.) 
Common and of general distribution in the lower penin- 
sula. Not yet reported in the upper peninsula. 
7+ 
3. VALLONIA EXCENTRICA Sterki. 
Apparently of general distribution in the southern part of 
the lower peninsula. Not yet reported north of Newaygo 
county. 
4. VALLONIA COSTATA (Miill.) 
Rare. Owosso, Shiawassee county, is the only known 
locality. 
5. POLYGYRA TRIDENTATA (Say). 
Not a very abundant species. Saginaw-Grand valley 
and southeastern counties. Not reported from the south- 
western part of the state nor from the ‘‘Thumb.” ‘‘ Not 
abundant in Kent county,” Streng. 
6. POLYGYRA FRAUDULENTA Pils. 
More abundant than the preceding species. Distribution 
the same. ‘‘ Not abundant in Kent county,” Streng. 
7. POLYGYRA INFLECTA (Say). 
Quite rare. Kent, Washtenaw, Wayne and Monroe 
counties. 
8. POLYGYRA PROFUNDA (Say). 
Southern part of the state. Not yet reported north of 
Muskegon. 
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