Shell small, short, plump, yellowish white, with four and a half polished whorls; nucleus sinistral but wholly immersed, so that the apex seems as if dextral, smooth; whorls convex, rapidly increasing, separated by a deep, almost channeled, very narrow suture: sculpture of extremely faint. Hue spiral striae almost absent in front of the suture and growing more distinct anteriorly, not visibly punctate; aperture ample, outer lip simple, body with a well-marked callus, continued on to the pillar and spreading a little over the base behind the pillar, which is concavely arcuate, its anterior edge thickened and expanded into a strong spiral plait or lamina behind which on the pillar is a second less marked plait; in front of the pillar is a small hut distinct notch; Lon. 3.6; max. diam., 2.25 mm.

Monterey, California, to Point San Quentin, Lower California

Dredged off Santa Rosa Island, California, in 53 fathoms, sandy mud