B. ventricosus. The ventricose Bulimus.
Species ventricose, from which circumstance it derived its name.
B. radiatus. The radiated Bulimus. Pl. [19], fig. 7.
Species turriculated.
B. citrinus. The citron Bulimus.
Species sinistral.
B. multifasciatus. The many-banded Bulimus.
Species slightly umbilicated.
8. Achatina. Twenty species.
This likewise is an elegant genus of shells, classed by Linnæus with the Bulla. They are the largest land-shells known, and greatly resemble the Bulimus, but never have their lips reflected or thickened. Sometimes the last whorl is compressed and attenuated at the base, and sometimes ventricose and not compressed.