Carychium species

1. Carychium riparium, Hubricht, 1977 Floodplain Thorn, 1.89 mm.
2. Carychium  exile H. C. Lea, 1842 Ice Thorn, 1.77 mm.
3. Carychium nannodes G. Clapp, 1905 File Thorn, 1.39 mm.

4. Carychium clappi Hubricht, 1959 Appalachian Thorn, 1.92 mm.

Carychium species

Collected  in KY: just W of nearby spring-fed pond [1.], at "Anguispira Rock" [2. and 3.]  ca. 8 mi. S. Bardstown, Nelson Co., and in Bernheim Forest, Bullitt Co. [4]. Digital images by Harry G. Lee.