Fred G. Thompson and Thomas M. Iliffe. 1987. Two new operculate land snails from the Palau Archipelago. Proceedings of the Biological Society of Washington, 100:447-451.
Georissa zea Thompson n. sp. (Gastropoda, Prosobranchia, Hydrocenidae) is described from Machachar Island. It differs from other species by its large size and regularly-spaced granular sculpture. It is the first hydocenid recorded form the Palau Archipelago. A second species, G. rufula, also occurs there. Pupina nitidula Thompson, n. sp. (Gastropoda, Prosobranchia, Pupinidae) is described from Ngeruktabel Island. It is differentiated by its small size and slender form.
Thomas M. Iliffe, Department of Marine Biology,
Texas A&M University at Galveston, P.O. Box 1675, Galveston, Texas
77553, USA.
E-mail:
iliffet@tamug.edu
Keywords: land snails; Palau; hydrocenid.
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