Pseudotryonia adamantina, commonly known as the Diamond tryonia or Diamond Y springsnail, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Cochliopidae.
The species is endemic to the United States. The common name is a reference to the Diamond Y Spring which is on the Diamond Y Spring Preserve in West Texas, a cienaga system.
References
About the Diamond Y Spring Preserve