Animal. Unknown.
Shell. Distinguished from the Stomatia by being destitute of a transverse rib, orbicular, oblong ear-shaped, imperforate; aperture entire, large, sublongitudinal; right lip effuse, dilated, open. Inhabits the Indian Ocean. Five species.
- Stomatella imbricata.
- S. rubra.
- S. sulcifera.
- S. auricula.
- S. planulata.
3. Genus Stomatia. Pl. [XI].
Animal. Unknown.
Shell. Ear-shaped, imperforate, spire prominent; aperture entire, large, oblong; right margin and columella equally raised; a transverse and tuberculated rib on the back. Inhabits the Indian Ocean. Two species.
- Stomatia phymotis.
- S. obscurata.
4. Genus Haliotis. Pl. [XI].
Animal. Body oval, much depressed, slightly spiral posteriorly, provided with a large foot doubly fringed at its circumference; head depressed; tentacula a little flattened; eyes at the summit of prismatic peduncles situated at the external side of the tentacula; mantle very thin, deeply slit at the left side; the two lobes pointed, and forming by their union a kind of canal to conduct water into the branchial cavity, and including two very long unequal branchial combs.
Shell. This beautiful genus derives its name from its resemblance to the human ear. The exterior, tuberculated, and generally loaded with marine substances, giving it an uncouth appearance, but its iridescent interior forms a magnificent contrast; it is pearly, with all the hues of the rainbow, recurving very depressed, oval, spire very small, sometimes eroded, almost posterior, aperture as large as the shell, with margins reflected inwards, the right sharp, left flat, and enlarged; disk pierced with holes, disposed in a line parallel to and near the left margin, the last commencing with a notch. These holes formed by the animal, as it increases the size of the shell, to admit the passage of a short syphon; they adhere to rocks, and are removed with much difficulty. Inhabits the sea at Molucca. Nineteen species.