Shell translucent and whitish, thin, the brown soft parts showing through, subcylindric, the nucleus minute, globular, with about three subsequent whorls; the spire blunt with the whorls rounded narrowly above a deep suture; surface except for faint incremental lines, polished; aperture as long as the shell, posterior sulcus small, outer lip thin, sharp, straight, axis imperforate, pillar lip thin, body hardly glazed. Height, 4.5; diameter, 2.5 mm. (Dall.)

San Pedro, California, to South Coronado Island, Mexico.