THE NAUTILUS. 119 



BECOEDS OF MINNESOTA MOLLUSKS. 



BY L. E. DANIELS. 



The month of July, 1905, I spent at various points in Minnesota, 

 and incidentally did some collecting of mollusca; and since there has 

 been so little published on the mollusca of Minnesota, I contribute 

 my mite. 



The following is a complete list of my catch. At Thief River 

 Falls and White Earth Lake I collected several days; at the other 

 localities but a few hours, so that this list cannot be taken as a com- 

 plete fauna of either locality. At the time of my collecting, the 

 rivers and lakes were very high, which will account for the scarcity 

 of fluviatile species. 



In order to shorten the names of the localities I will say that 

 Halma is in Marshall county; Anita and Thief River Falls in Red 

 Lake county; White Earth Lake in Becker county; Lake Harriett, 

 near Minneapolis, in Hennepin county; and Cannon Lake in Rice 

 county. 



Polygyra muUilineata (Say). Minneapolis. 



Circinaria concava (Binn.). Minneapolis. 



Vilrona limpida Gld. Thief River Falls. 



Vitrea hammonis (Strom.). Thief River Falls, White Earth 

 Lake. 



Vitrea binneyana (Morse). Thief River Falls, White Earth 

 Lake. 



Euconulus fulvus (Miiller). Thief River Falls, White Earth 

 Lake. 



Euconulus cher sinus polyyyratus Pils. Thief River Falls, White 

 Earth Lake, Anita. 



Zonitoides arborea (Say). Thief River Falls, White Earth 

 Lake. 



Zonitoides minuscula (Binney). Thief River Falls. 



Zonitoides milium (Morse). Thief River Falls, White Earth 

 Lake. 



Pyramidula allernata (Say). White Earth Lake, Minneapolis. 



Pyramidida cronkhitei- anthonyi Pilsbry. White Earth Lake, 

 Cannon Lake, Anita. 



Helicodiscus parallelus (Say). Thief River Falls, White Earth 

 Lake, Anita. 



