Voluta nautica. V. diadema. V. armata. V. ducalis. V. tesselata. V. Neptuni. V. cymbium. V. olla. V. proboscidalis. V. porcina. V. Æthiopica. V. melo. V. imperialis. V. pellis-serpentis. V. vespertilio. V. Hebræa. V. musica. V. chlorosina. V. lævigata. V. polyzonalis. V. nodulosa. V. magnifica. V. ancilla. V. Magellanica. V. Pacifica. V. fulminata. V. Junonia. V. scapha. V. Brasiliana. V. mitis. V. nivosa. V. serpentina. V. thiarella. V. carneolata. V. Guinaica. V. fulva. V. sulcata. V. nucleus. V. undulata. V. lapponica. V. vexillum. V. volvacea. V. festiva. V. mitræformis. _V. Æthiopica._ The Æthiopian Volute. Pl. 30, fig. 2. Species large, oval, convex, ventricose; spire papillary, with whorls coronated with elevated hollow spines. _V. musica._ The music Volute. Species oval, marked like musical notes set in scores on its surface; spire sub-tuberculated. _V. Magellanica._ The Magellan Volute. Species sub-fusiform, elongated, and sub-turreted; no spines or tubercles on the whorls. 4. Marginella. Twenty-four species. Distinguished from the Voluta, from which it was taken, by having the outer lip thickened. Shell smooth, polished, ovate, oblong, sub-conic, spire short and papillary; aperture narrow, sub-ovate, by a light curve of the right edge, which is inflated or reflected, slightly notched anteriorly; the columellar edge marked with three distinct oblique plaits.