Cyclohelia lamellata, New Genus and Species of Stylasteridae (Cnidaria: Hydrozoa) from the Bering Sea

Abstract

A new genus and species of Stylasteridae is described, Cyclohelia lamellata, based on one specimen from 550 m off the Pribilof Islands, Bering Sea. The species is unusual in having a lamellate growth form and unique in having elliptical dactylopore spines that are rimmed on all sides. The genus is hypothesized to be most closely related to Distichopora and Sporadopora. Cyclochelia lamellata is one of the most northerly records of a stylasterid in the Pacific Ocean.