Non-Marine Mollusks of Borneo. II Pulmonata: Pupillidae, Clausiliidae. III Prosobranchia: Hydrocenidae, Helicinidae

Abstract

The Bornean land snails of the families Pupillidae, Clausiliidae, Hydrocenidae, and Helicinidae are reviewed based on collections from 38 localities in Sarawak and Sabah and on previous records from the island. The following species are recorded: PUPILLIDAE—Pupisoma orcula (Benson), Costigo puluiusculum (Issel) new combination, Costigo moleculina Benthem-Jutting, Nesopupa moreleti (Brown), N. malayana Issel; Boysidia (Dasypupa) salpinx new subgenus and species, B. (D.) paini new species. The following Malayan species are referred to the subgenus Dasypupa: B. (D.) terae (Tomlin), B. (D.) megaphona (Benthem-Jutting), B. (D.) elephas (Benthem-Jutting), and B. (D.) perigyra (Benthem-Jutting). CLAUSILIIDAE: Phaedusa borneensis (Pfr.), P. filicostata stenotrema new species. HYDROCENIDAE : Georissa bangueyensis Smith, G . borneensis Smith, G. everetti Smith, G. gomantonensis Smith, G. hosei Godwin-Austen, G. kobelti Gredler, G. niahensis Godwin-Austen, G. saulae (Benthem-Jutting) new combination, G. scalinella (Benthem-Jutting) new combination, G. similis Smith, G. williamsi Godwin-Austen, G. hadra new species, G. pyrrhoderma new species, and G. xesta new species. Names placed in synonymy include G. flavescens Smith (= G. gomantonensis) and G. hungerfordi Godwin-Austen (= G. williamsi). No HELICINIDAE were collected. Species previously recorded from the island are listed.