Southern hemisphere deep-water stylasterid corals including a new species, Errinalabrosa sp. n. (Cnidaria, Hydrozoa, Stylasteridae), with notes on some symbiotic scalpellids (Cirripedia, Thoracica, Scalpellidae) Author Pica, Daniela Author Cairns, Stephen D. Author Puce, Stefania Author Newman, William A. text ZooKeys 2015 472 1 25 http://dx.doi.org/10.3897/zookeys.472.8547 journal article http://dx.doi.org/10.3897/zookeys.472.8547 1313-2970-472-1 5320D7024D0E490D8E16C6A98102E6FC Taxon classification Animalia Anthoathecata Stylasteridae Genus Stephanohelia Cairns, 1991 Diagnosis. Colonies with irregular shape, all with commensal polychaetes. Branches polychotomous with gastropores exclusively in the branch axils. Coenosteal texture linear-imbricate. Gastrostyle massive. Dactylopore spines small and without dactylostyles. Male ampullae superficial. Discussion. The genus Stephanohelia is monospecific ( Cairns 1991 ). The genus is easily diagnosed by its characteristic polychotomous branching and the gastropores exclusively at branch axils. Type species. Stephanohelia praecipua Cairns, 1991. Depth range. 318-793 m. Distribution. New Zealand and New Caledonia.