List of the MoUusca of Missoun. 93 



94. PoLYGYKA ZALETA Binney. 



Fern Glen, St. Louis Co. (9) ; Vineland, Jeff- 

 erson Co. 



Those from Fern Glen could not be distinguished from 

 Ohio specimens if mixed with them. They are up to 29 

 mm. diameter. In 1898 Frank C. Baker identified some 

 shells collected at Arcadia, among them Polygyra zaleta. 

 Whether these were the present zaleta or the zaleta 

 ozarkensis is uncertain. 



95. Polygyra zaleta ozarkensis Pils. 



Columbia, Boone Co. (1) ; Moniteau Co. (1) 

 Camden Co. (3) ; Roaring River, Barry Co. (1) 

 Cassville, Barry Co. (2) ; Macdonald Co. (2) 

 Galena, Stone Co. (4) ; Current river, county 

 not given, (Pils. & Fer.) ; Cedar Gap, Wright 

 Co. (Pils. & Fer.) ; Chadwick, Christian Co. 

 (Pils. & Fer.) ; Springfield, Greene Co. (Weller) ; 

 St. Frangois Co. (Walker Coll.). 



96. Polygyra multilixeata Say. 



Boonville, Cooper Co. (1). 



In August, 1911, I found a single dead but fresh shell 

 on the river bluff above the bridge at Boonville, the only 

 one I have found in the State. It is 20 mm. in diameter. 



Postpliocene : — Glasgow, Howard Co. (4) ; Near 

 Mouth of Big Nemaha and Platte rivers (Ham- 

 bach). 



97. Polygyra appressa Say. 



New Madrid Co. (7) ; River bottom, Scott Co. 

 (1); Benton, Scott Co. (7); Poplar Bluff, But- 

 ler Co. (2) ; St. Fran(,-ois Co. (2) ; Madison Co. 

 (3) ; Cape Girardeau, Cape Girardeau Co. (11) ; 

 Allanville, Cape Girardeau Co. (13); Ste. Gen- 

 evieve, Ste. Genevieve Co. (17); Kimmswick, 



