A Revision of the Stylasteridae (Cnidaria, Hydrozoa, Filifera) from Alaska and Adjacent Waters Author Cairns, Stephen D. Author Lindner, Alberto text ZooKeys 2011 158 1 88 http://dx.doi.org/10.3897/zookeys.158.1910 journal article http://dx.doi.org/10.3897/zookeys.158.1910 1313-2970-158-1 Genus Cyclohelia Cairns, 1991 Diagnosis. Colonies lamellar, often attaining a large size. Coenosteum reticulate-granular, reddish-orange. Gastro- and dactylopores uniformly distributed on corallum faces, of the axial type. Dactylopore spines circular to elliptical, enclosed by a thin wall for entire perimeter. Dactylostyles absent. Gastrostyles elongate but tabulae absent; a diffuse ring palisade present. Ampullae internal. Discussion. The genus is monotypic. According to the molecular analysis of Cairns 2005 ), rendering the colonies of Distichopora anceps as a "transition" in morphology between the two genera. Type Species. Cyclohelia lamellata Cairns, 1991, by original designation. Distribution. Known only from the Aleutian Islands and Pribilof Islands, 27-567 m.