styx, Typhlichthys Brownstein [C. D.], Watkins-Colwell [G. J.], Policarpo [M.], Harrington [R. C.], Hoffman [E. A.], Casane [D.] & Near [T. J.] 2026:18, Fig. 3 [Integrative Organismal Biology v. 8 (no. 1); ref. 43252] Flat Rock Cave, Smith County, Tennessee (site MLN 12-41), 36.235°N, 86.0992°W. Holotype: YPM ICH 025653. Paratypes: YPM ICH 25653 (3). •Valid as Typhlichthys styx Brownstein, Watkins-Colwell, Policarpo, Harrington, Hoffman, Casane & Near 2026. Current status: Valid as Typhlichthys styx Brownstein, Watkins-Colwell, Policarpo, Harrington, Hoffman, Casane & Near 2026. Amblyopsidae. Distribution: North America: cave systems in Valley and Ridge, Cumberland Plateau, Interior Low Plateaus and Nashville Basin, Tennessee, Alabama and Georgia, U.S.A. Habitat: freshwater.