A new species of land snail of the genus Georissa (Gastropoda : Hydrocenidae) from the Philippine Islands

Georissa cavini new species is described from an isolated limestone outcrop in the northeastern extremity of Panay Island, Philippine Islands. The new species is characterized by its relatively large size and shell sculpture of weak spiral threads which become increasingly oblique below the peripher y. It is most Similar to Georissa coccinea Quadras and Moellendorff, 1895 f rom Masbate Island, Philippine Islands. Georissa everetti E. A. Smith, 1895 from Sarawak has a similar shell, but much stronger shell sculpture.