BulletinofZoological Nomenclature55(1) March 1998 47 OPINION 1886 Plumularia Lamarck, 1816 (Cnidaria, Hydrozoa): conserved by the designation of Sertularia setacea Linnaeus, 1758 as the type species Keywords. Nomenclature; taxonomy; Hydrozoa; plumulariidae; hydroids; Plumularia; Plumularia selacea. Ruling (1) Under the plenary powers all designations of type species for the nominal genus Plumularia Lamarck, 1816 prior to that by Broch (1918) of Sertularia setacea Linnaeus, 1758 are hereby set aside. (2) The name Plumularia Lamarck, 1816 (gender: feminine), type species by subsequent designation by Broch (1918) Sertulariasetacea Linnaeus, 1758, as ruled under the plenary powers in (1) above, is hereby placed on the Official List ofGeneric Names in Zoology. (3) The name setacea Linnaeus. 1758, as published in the binomen Sertularia setacea (specific name of the type species of Plumularia Lamarck, 1816) is hereby placed on the Official List ofSpecific Names in Zoology. History ofCase 2978 An applicationforthedesignation ofSertulariasetaceaLinnaeus, 1758 asthetype species oiPlumularia Lamarck, 1816 was received from Dr Dale R. Calder {Royal Ontario Museum. Toronto. Ontario, Canada; UniversityofToronto, Toronto. Ontario. Canada)and DrPaul F.S. Cornelius(TheNaturalHistoryMuseum, London, U.K.)on 12 April 1995. After correspondence the case was published in BZN 53: 167-170 (September 1996). Notice ofthe case was sent to appropriatejournals. Acomment from ProfL.B. Holthuis(NationaalNatuurhistorisch Museum. Leiden. The Netherlands), published in BZN 54: 39 (March 1997), pointed out that a type species designation for Plumularia made by H. Milne Edwards (1836-1849) was earlierthan that by Busk (1851) (cf. para. 5 ofthe application). ProfHolthuis added that this earlier designation did not affect the proposals made in the application. Decision ofthe Commission On 10September 1997 themembersoftheCommissionwereinvited tovoteonthe proposals published in BZN 53: 169. At the close of the voting period on 10 December 1997 the vo—tes were as follows: Affirmative votes 25: Bock, Bouchet, Brothers, Cocks, Cogger, Dupuis, Eschmeyer, Heppell, Kabata, Kerzhner, Kraus, Lehtinen, Macpherson, Mahnert, Martins de Souza, Mawatari, Minelli, Nielsen, Nye, Papp, Patterson, Savage, Schuster, Song, Stys — Negative votes none. Ride was on leave ofabsence. Original references Thefollowingarethe original references to the names placed onOfficial Lists by the ruling given in the present Opinion: 48 BulletinofZoological Nomenclature 55(1) March 1998 Ptumuluria Lamarck, 1816. Histoirenaturelle desanimauxsans vertebres, vol. 2, p. 123. selacea. Sertularia, Linnaeus, 1758, Sysleina Naturae. Ed. 10, vol. 1, p. 813. ThefollowingisthereferenceforthedesignationoiSertulariasetaceaLinnaeus, 1758asthe type species ofthe nominal genus Phimularia Lamarck, 1816: Broch, H. 1918. Danish Ingolj-Expedition, 5(7): 195.