245-251 ISBN 0-7876-5777-8;* Gibson, Ray (2002) "The Invertebrate Fauna of New Zealand: Nemertea (Ribbon Worms)" (NIWA Biodiversity Memoir No.
245–251 ISBN 0-7876-5777-8;* Gibson, Ray (2002) "The Invertebrate Fauna of New Zealand: Nemertea (Ribbon Worms)" (NIWA Biodiversity Memoir No.