List of the Mollusca of Missouri. 99 



teau Co. (11) ; Warsaw, Benton Co. (1) ; Pettis 

 Co. (1) ; Columbia, Boone Co. (7) ; Birmingiiam, 

 Clay Co. (13) ; Ste. Genevieve, Ste. Genevieve 

 Co. (4) ; Taborville, St. Clair Co. (Walker Coll.) ; 

 Milan, Sullivan Co. (Same) ; Clinton, Henry Co. 

 (Same); Callaway Co. (Greger). 



At Boonville some specimens were intermediate in 

 size between nionodon and fraterna. In Bollinger county 

 the one specimen found was 9 mm. diameter, but from 

 Scott county in the same part of the State they were only 

 71/^ mm. 



108. POLYGYEA FRATERNA ALICIA Pils. 



Mineral Point, Washington Co. (1); Farming- 

 ton, St. Francois Co. (3) ; E-ivermines, Same Co. 

 (6); Paris, Monroe Co. (6). 



109. POLYGYRA FRATERNA FRIERSONI Pils. 



Jefferson City, Cole Co. (Walker Coll.). 



110. PoLYGYRA FRATERNA IMPERFORATA Pils. 



Ste. Genevieve, Ste. Genevieve Co. (6) ; Cape 

 Girardeau, Cape Girardeau Co. (1). 



111. PoLYGYRA DORFEUILLIANA Lca. 



Fern Glen, St. Louis Co. (9) ; Hunter, Carter 

 Co. (3) ; Howell Co. (3) ; Douglas Co. (2) ; Iron- 

 ton, Iron Co. (1) ; i\.rcadia, Iron Co. (Baker) ; 

 Stone Co. (Stearns); Neosho, Newton Co. 

 (Walker Coll.); Pineville, Macdonald Co. 

 (Walker Coll.); Cureall Springs, Howell Co. 

 (Walker Coll.); Henry Co. (Pils. & Fer.) ; Cal- 

 laway Co. (Greger). 



112. POLYGYRA DORFEUILLIANA SAMPSONI Wcth. 



Warsaw, Benton Co. (25); Camden Co. (13); 

 Barry Co. (13); Grand Falls, Jasper Co. (7); 



