First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species Author Ekins, Merrick Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia & School of Biological Sciences, University of Queensland, St Lucia, Queensland, 4072 Australia & Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Queensland, Australia Author Baker, Soraya Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia Author Hooper, John N. A. Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia & Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Queensland, Australia text Zootaxa 2023 2023-07-20 5318 3 382 400 http://dx.doi.org/10.11646/zootaxa.5318.3.4 journal article 10.11646/zootaxa.5318.3.4 1175-5326 6CFEC285-1E75-4061-997B-855E799A432A Genus Hamacantha Gray, 1872 Type species Hymedesmia johnsoni Bowerbank, 1864 (by original designation) Definition . Hamacanthidae with diancistras (after Hajdu 2002 ).