Review of Orbiniidae (Annelida, Sedentaria) from Australia Author Zhadan, Anna text Zootaxa 2020 2020-10-14 4860 4 451 502 journal article 8231 10.11646/zootaxa.4860.4.1 1f5ee6c2-2635-44a8-8469-49319b7a8c62 1175-5326 4414137 876F1085-5296-4340-A951-41420C011917 Genus Orbinia Quatrefages 1866 Orbinia Quatrefages 1866: 288 ; Hartman 1957: 256; Blake 2017: 86 ; Sun & Li 2018: 352 . Orbinia (Orbinia) Pettibone 1957: 160 . Diagnosis (after Blake 2017 ; Sun & Li 2018 ). Prostomium conical, pointed, peristomium with 1 achaetous ring. Branchiae from chaetiger 5–20. Posterior thoracic chaetigers with postchaetal papillae (2–many) and subpodial papillae (3–many), usually forming ventral encircling fringe of 5 or more papillae. Thoracic neurochaetae including uncini or subuluncini, and crenulated capillaries; neuropodial modified spines absent; forked chaetae and flail chaetae present or absent in abdominal parapodia.