Species elongated, with very projecting spire.
O. undata. The waved Olive. Pl. [30], fig. 4.
Species oval, spire hardly projecting.
O. cruenta. The bloody Olive.
Species cylindrical, suture canal deep; fawn colour, with triangular spots of purple, and two dark brown spots on the edge of the outer lip.
6. Conus. The Cone. One hundred and eighty-one species.
A genus valued on account of the beauty, symmetry, and variety of its species; some of its shells are very rare and remarkable for their richness of colouring; some are coronated, and others have a plain spire. They are all covered with an epidermis, beneath which is generally a smooth surface, with sometimes a high polish; a few are granulated and tuberculated. They are found in great abundance in the seas of warm climates.
Shell conic, covered with a membranous periosteum, thick, solid, involuted; the summit of the cone anterior; the spire little or not at all projecting; aperture longitudinal, very narrow, turning towards its anterior extremity; the external edge straight, with oblique plaits in its anterior part; operculum very small and horny, sub-spiral, with summit terminal.
Conus marmoreus.
C. Bandanus.