The Gila tryonia (Tryonia gilae) is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Arizona in the United States, where it is known only from Graham County.[1]
This snail has a conical, elongated shell reaching about 3.4 millimeters in length and 3.3 in height. The shell is transparent. The animal has fleshy lips on its snout.[2]
This snail occurs at just a few spots in springs in the Upper Gila River system near Bylas, Arizona.[1]