Shell minute, fewwhorled, asymmetrically pyramidal, flattened dorsoventrally, spire bent to right. First whorl, after the (lost) nucleus, bulbous, sculptured with about 20 low axial costae; subsequent whorls weakly convex, sculptureless except for a microscopic subretiform surface granulation; suture distinct, filled in with an oppressed band of semitranslucent material through which a secondary false suture is visible. Aperture large, pyriform, slightly effuse or subcanaliculate below; outer lip thick, simple; inner lip narrowly and thickly calloused, completing the peritreme. Color white. Alt. of holotype 3.14, max. diam. 1.50, dorseventral diam. 0.98, alt. aperture 1.31 mm. Type Locality: Reef at west end of Puerto Penasco bight, Sonora,, Mexico; S. S. Berry, 12 May 1952.