Benthic hydroids (Cnidaria: Hydrozoa) from off George V Coast (East Antarctica) Author Peña Cantero, Álvaro L. Author Marzal, Marina Fresneda text Zootaxa 2018 2018-06-26 4441 1 121 136 journal article 29821 10.11646/zootaxa.4441.1.7 0535eaeb-2e3b-4b6d-9ced-58a61fd02e03 1175-5326 1301927 2D48BC12-329C-4476-BF43-4648B4807E3B Hydrodendron arboreum ( Allman, 1888 ) (*) Ophiodissa arborea — Briggs, 1938 : 11 –13. Hydrodendron arboreum — Peña Cantero & Ramil, 2006 : 952 –953, fig. 2c (synonymy). Remarks. Briggs (1938) reported the species at depths between 46 and 549 m in Commonwealth Bay and at 66°52’S – 145°30’E , off Mertz Glacier. Pan-Antarctic distribution ( Peña Cantero & Ramil 2006 ).