Cantrainea philipiana: Shell whitish, of four rounded whorls and a minute smooth nucleus; rather depressed, base rounding into the rest of the whorl. Sculpture of ten even strong spiral costae, with channelled interspaces, here and there toward the aperture indications of intercalary hardly raised spirals, and over all faint spiral striae more or less visible under a lens. Radiating sculpture faint, the tops of the spirals are a little undulated, and two close to the umbilicus are indistinctly nodulous, otherwise there are only the usual incremental lines. Operculum as usual; umbilicus perforate, rather profound ; aperture prolonged above, edges a little flaring, subcircular. Alt. 3.5, diam. 4.0 mm.
Habitat. Station 192, near Dominica, in 138 fms., bottom temperature 63°.0 F.
This shell may not be quite adult, and the umbilicus may be closed later. It has a different shape from any of the varieties of the preceding which have come under my notice, and is much smaller.