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Rediscovery of the Antarctic species Sipho gaini Lamy, 1910 (Gastropoda: Neogastropoda) with remarks on its taxonomic position

Published online by Cambridge University Press:  06 May 2004

Yuri I. Kantor
Affiliation:
A.N. Severtzov Institute of Problems of Evolution, Russian Academy of Sciences, Leninski prospect 33, Moscow 117071, Russia
M.G. Harasewych
Affiliation:
Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0118, USA

Abstract

Examination of the holotype of Sipho gaini Lamy, 1910, attributed by recent authors to the genus Chlanidota (Buccinulidae), revealed that this species belongs to the genus Belaturricula and is a senior synonym of Belaturricula antarctica Dell, 1990. A redescription of the shell, anterior alimentary system, and radular morphology of Belaturricula gaini is provided. The genus Belaturricula is transferred to the family Conidae (sensu Taylor et al. 1993) on the basis of its radula, which is composed of hollow marginal teeth. The presence of a large shell, prominent operculum, acinous salivary glands, radular teeth with narrow bases in B. gaini, as well as the absence of buccal lips and rhyncodeal introvert, all indicate affinities with the conid subfamily Clathurellinae. Because the radula of Pontiothauma ergata Hedley (1916) is nearly indistinguishable from that of Belaturricula gaini, we reassign Hedley's species to the genus Belaturricula as Belaturricula ergata (Hedley, 1916).

Type
Papers—Life Sciences and Oceanography
Copyright
© Antarctic Science Ltd 1999

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