- Anatifera lævis.
- A. villosa.
- A. vitrea.
- A. dentata.
- A. striata.
- A. aculeata.
8. Genus Pollicipes. Pl. [V].
Animal. Body covered by a shell, and supported on a tabular, tendinous, scaly peduncle; with many tentacular arms.
Shell. Consisting of thirteen or more valves, the smallest at the sides, which are very flat and compressed, the peduncle short, wrinkled, rigid, and often covered with scales like shagreen. Inhabits the European and American seas. Six species.
- Pollicipes cornucopia.
- P. scalpellum.
- P. homii.
- P. mitella.
- P. peronii.
- · · · · ·
- P. Mortoni.*
9. Genus Cineras. Pl. [V].
Animal. Body pedunculated, and encased in a membranous tunic, which is swollen above, with an opening below the summit, from which protrude many ciliated articulated arms.
Shell. Composed of five testaceous oblong valves, two at the sides of the aperture and three on the back, not covering the whole of the body; supported by a peduncle of a greenish colour with several longitudinal stripes. Inhabits the British coast. One species.
- Cineras vittata.