Description
Sh ell ovate or lentic ular with fine pores composing hexagonal meshes. The peristome is prolonged as a tu bular pharynx surrounded by spines . Shell may be covered by marginal or abo ral spines (Fig . 34).
Type species
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Raw text
Sh ell ovate or lentic ular with fine pores composing hexagonal meshes. The peristome is prolonged as a tu bular pharynx surrounded by spines . Shell may be covered by marginal or abo ral spines (Fig . 34).