Shell sub-globular, very ventricose, thin, encircled by decurrent flutings; the spire very short; the last turn much larger than all the others together; aperture oblong, very large, by the great excavation of the right edge, which is crenated through all its length; columella twisted; operculum unknown. Dolium galea. D. olearium. D. maculatum. D. fasciatum. D. pomum. D. variegatum. D. perdix. _D. perdix._ The Partridge Dolium. Pl. 29, fig. 4. Species sub-umbilicated, ovate-oblong, thin, thickly ribbed, and convex; colour reddish brown, clouded and spotted with white. _D. galea._ The brown Tun. Species not umbilicated; sometimes exceeds ten inches in diameter. 9. Buccinum. The Whelk. Fifty-eight species. Notwithstanding the divisions of the Linnæan Buccinum into so many different genera, it still presents a great variety and diversity of species. Shell slightly covered with epidermis, oval, elongated; the spire middling elevated; aperture oblong, oval, notched, and sometimes sub-canaliculated anteriorly; the right edge thick, not reflected; columella simple and swelled at the upper part; operculum horny, complete, oval, with sub-concentric elements; the summit slightly marked and marginal. Buccinum undatum. B. glaciale. B. Anglicanum. B. papyraceum. B. annulatum. B. lævissimum. B. crenulatum. B. reticulatum. B. Tranquebaricum. B. lineatum. B. fuscatum. B. lineolatum. B. maculosum. B. politum. B. suturale. B. mutabile. B. inflatum. B. retusum. B. ventricosum. B. gemmulatum. B. Coromandelianum. B. fasciatum. B. miga. B. lyratum. B. arcularia. B. coronatum. B. Thersites. B. pauperatum. B. neriteum. B. testudineum. B. achatinum. B. glans. B. papillosum. B. olivaceum. B. canaliculatum. B. tricarinatum. B. Brasilianum. B. semiconvexum.