Shell conical to ovate-conical. Aperture broadly elliptical.
Aperture broadly ovate.
Suwannee Hydrobe, Aphaostracon hypohyalina Thompson, 1968. Occurs in a small area in northcentral Florida from the Suwannee River system west to small streams in Wakulla County. Endemic to Wekiwa Springs, Orange County. Aperture loosely attached to or widely separated from preceding whorl. Thick-shelled Hydrobe, Aphaostracon pachynotus Thompson, 1968.