New records of sipunculan worms from Taiwan Author Hsueh, Pan-Wen Author Kuo, Chia-Ming text Zootaxa 2009 2067 51 61 journal article 10.5281/zenodo.187023 f47f2de5-ebee-4164-92d8-e3542a1cd334 1175-5326 187023 Genus Phascolosoma Leuckart Remarks. Two subgenera, Phascolosoma ( Phascolosoma ) Leuckart and Phascolosoma ( Fisherana ) Stephen , were recognised by Cutler (1994) . The key difference between these two subgenera is that, whereas species of subgenus Fisherana have a uniform continuous layer of longitudinal muscle in the body wall, those of Phascolosoma sensu stricto have the muscle gathered in bands. Both species reported in the present study belong to subgenus Phascolosoma .