Two new dimorphic soft-coral species (Anthozoa: Octocorallia) from Antarctica

11 pages, 8 figuresSphaeralcyon shackletonisp. nov. and Sphaeralcyon scottisp. nov. are described and illustrated from material collected at the Scotia Sea and Weddell Sea on the Polarstern cruises ANT XIX/3 (ANDEEP-I), ANT XIX/5 (LAMPOS), and ANT XXI/2 (BENDEX). With the discovery of Sphaeralcyon shackletoni and S. scotti, three species are now known in the genus Sphaeralcyon, all them reported from the Southern Ocean. The diagnosis of the genus has been slightly modified to accommodate some of the characters of the new species. © Springer 2005Support for this work was provided by the Spanish CICYT projects REN2001-4269-E/ANT, REN2001-4929-E/ANT, and REN2003-04236Peer Reviewe