"Shell small, stout, solid, with 5½ whorls separated by a deeply-channeled suture; first whorl rounded and subglobular; subsequent whorls smooth, moderately convex; aperture wide in front, behind ending in a deep narrow sinus at the end of the suture, between the body and the outer lip; anterior third of the body covered by a revolving band of enamel with a groove at the posterior edge, otherwise smooth; the outer lip sharp, smooth within; body with a thin wash of callus, pillar thick, callous, twisted, with its anterior edge forming a strong rounded fold with a depression behind it, the inner surface of the pillar finely spirally lirate; canal wide, shallow. Length, 12; length of aperture, 8.5; maximum diameter of shell, 6 mm.". Oligocene. Tampa silex beds at Ballast Point, Tampa Bay, Florida, USA.
Holotype USNM 165047.