Animal. Unknown.
Shell. Oval, inflated, rather thin, with longitudinal parallel ribs, formed by the preservation of the band of the right margin; the spire very short and pointed, the last whorl much longer than all the others together; aperture large, ovate, with a wide slope anteriorly; the right edge much hollowed, and thickened outwardly; the columella smooth and terminated in a point anteriorly. A beautiful genus. Found in the Indian Ocean. Nine species.
- Harpa imperialis.
- H. ventricosa.
- H. conoidalis.
- H. minor.
- H. nobilis.
- H. articularis.
- H. rosea.
- H. striata.
- H. mutica.
8. Genus Dolium. Pl. [XII].
Animal. As in Purpura.
Shell. Subglobular, thin, surrounded by decurrent flutings; spire very short, the last whorl much larger than all the others together; aperture oblong, very large, on account of the great excavation of the right edge, which is crenated throughout its length; columella twisted. Found in the Indian Ocean and Mediterranean seas. Seven species.
- Dolium galea.
- D. fasciatum.
- D. pomum.
- D. variegatum.
- D. perdix.
- D. olearium.
- D. maculatum.
9. Genus Buccinum. Pl. [XII].
Animal. See Purpura.
Shell. With a light epidermis, oval, elongated; the spire moderately elevated; aperture oblong, oval, notched, sometimes subcanaliculated anteriorly; right edge thick, not reflexed; columella simple and dilated superiorly; operculum horny, complete, and oval. Found in all seas. Sixty-six living. Fourteen fossil.