Home Acknowledgments Conventions Glossary Maps References Links Articles Thumbnails Species list Suborder Next family	Arminidae The family Arminidae includes elongate, flattened animals (usually with longitudinal ridges on their notums). Most are sand dwellers that feed on sea pens. Unlike other genera in the family, they lack gills. Only two species are known from Hawaii, both in the genus Dermatobranchus. Dermatobranchus cf. piperoides Dermatobranchus rubidus
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