Stenoplax Dall, 1879

Type species and locality. Chiton limaciformis G.B. Sowerby I, 1832 accepted as Stenoplax limaciformis (G.B. Sowerby I, 1832) (type species by original designation), Stenoplax limaciformis Sowerby, 1832 . México to Inner Lobos Id, Peru, Guacomayo.