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NOTES ON THE GENUS NAESIOTUS ALBERS, 1850 (MOLLUSCA, GASTROPODA, BULIMULIDAE)1 by ABRAHAM S. H. BREURE (Department of Systematics and Evolutionary Biology, Rijksmuseum van Natuurlijke Historie, Leiden, The Netherlands) and GUY COPPOIS (Laboratoire de Zoologie Systématique, Université Libre de Bruxelles, Belgium) SUMMARY The genus Naesiotus Albers, 1850, which previously also has been considered a subgenus or a synonym of Bulimulus Leach, 1814, has provisionally been studied at the species level. The variation of the shell morphology of 60 species and the analysis of the anatomical data of 23 taxa do not justify a division of Naesiotus in different subgenera. Bulimulus gilderoyi Van Mol, 1972 is placed in the synonymy of Naesiotus cavagnaroi A. G. Smith, 1972. Lectotypes are designated for 10 taxa and new localities are mentioned for 5 species. INTRODUCTION The genus Naesiotus was introduced by ALBERS in 1850 and included six species, viz. calvus (Sowerby), eschariferus (Sowerby) jacobi (Sowerby), nux (Broderip), rugiferus (Sowerby) and ustulatus (Broderip). ALBERS (1960) selected nux (Broderip) as the type species of Naesiotus and listed seven additional species. PILSBRY (1897) followed all previous authors and restricted Naesio- tus to the species described from the Galapagos. He introduced the name Protoglyptus for the species
Netherlands Journal of Zoology (in 2003 continued as Animal Biology) – Brill
Published: Jan 1, 1977
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