9. Genus Succinea. Pl. [X].
Animal. See Helix.
Shell. Terrestrial, very thin, pellucid, ovate oblong, with a conical, pointed spire, formed of only one or two whorls; aperture very large and oval, edges disunited; right edge always acute, the left arched, formed by a smooth attenuated columella. The shells of this genus never having their lip thickened or reflected, distinguish them from those of the genus Bulimus, to which they bear a strong resemblance. Inhabits the sides of ditches and lakes, both in Europe and America. Seven species.
- Succinea cuculata.
- S. amphibia.
- S. rubescens.
- S. oblonga.
- S. patula.
- S. pellucida.
- · · · · ·
- S. aperta.*
10. Genus Auricula. Pl. [X].
Animal. See Helix.
Shell. Solid, thick, and smooth, oval, oblong spire very obtuse, aperture entire, enlarged, ear-shaped, much contracted behind; edges not united, right lip thick and generally reflected outwardly; the left or columella with one or more teeth or callous plaits. This genus derives its name from its resemblance to the ears of certain animals. It is a land shell found chiefly in the East and West India Islands. Sixteen species.
- Auricula Midæ.
- A. Judæ.
- A. sileni.
- A. leporis.
- A. felis.
- A. Dombeiana.
- A. nitens.
- A. angiostoma.
- A. scarabæus.
- A. bovina.
- A. caprella.
- A. myosotis.
- A. minima.
- A. coniformis.
- A. monill.
- A. labrella.
11. Genus Cyclostoma. Pl. [X].
Animal. See Helix.