To be easily distinguished from the Stomatia by not having a transversal
rib.
Shell very depressed, orbicular or oblong; imperforate; interior pearly;
aperture very large, oval, longer than wide; the right edge effuse,
dilated, and open; summit pointed and incurved.
Stomatella imbricata.
S. rubra.
S. sulcifera.
S. auricula.
S. planulata.
_S. imbricata._ The imbricated Stomatella. Pl. 22, fig. 1.
Sub-orbicular, convex, sub-depressed, rough, covered with imbricated
scales; colour grayish brown.
_S. auricula._ The ear-shaped Stomatella.
Species oval, elongated.