Argyropeza leucocephala (Watson, 1886). Length, 3.5 mm; diameter, 1 mm. Shell: conical, high-spired; with prominently beaded spirals; glistening, cream white. Spire: protoconch of two and one-half spirally threaded, brown whorls; teleoconch of seven convex whorls; suture wide, distinct, almost constricted. Sculpture: about nine rather prominent axial ribs crossed by strong spiral threads (on the apical whorls,two spirals, on last whorl three) forming sharp nodules at their junctions; axial ribs stopping on the periphery of the last whorl, remainder of whorl and base with two or three subspinose spiral threads. Aperture: ovate; outer lip sharp. Color: translucent white when alive; opaque, glistening, cream when worn. These mollusks are common at depths of 200 to 250 m. A.leucocephala was described from the Hawaiian Islands.
All described species of Argyropeza come from depths of from 200 to 400 m. The Hawaiian shells are distinguished from the type species in the genus, A. divina Melvill and Standen 1901 from the Persian Gulf, by more convex whorls and from A. schepmani Melvill and Standen, 1901 and ,A. divina by the less spinose sculpture. In the shells of A. izekiana Kuroda, 1949, from Japan, the apical nodular spiral thread is closer to the suture than it is in the Hawaiian shells.