Shallow water hydroids (Cnidaria, Hydrozoa) from the 2002 NOWRAMP cruise to the Northwestern Hawaiian Islands Author Calder, Dale R. Author Faucci, Anuschka 0000-0001-9002-8987 anuschka@hawaii.edu text Zootaxa 2021 2021-12-24 5085 1 1 73 journal article 10.11646/zootaxa.5085.1.1 1175-5326 5802920 12FC3342-F2A0-4EE1-9853-9C5855076A10 Bicaularia tongensis ( Stechow, 1919b ) Fig. 10g Sertularella tongensis Stechow, 1919b: 89 , figs F 1 , G 1 .— Coles et al ., 2002a: 318 .— Carlton & Eldredge, 2009: 38 . Bicaularia tongensis .— Calder, 2020: 217 , fig. 5c, d. Type locality. Kingdom of Tonga: Tonga Islands ( Stechow 1919b ) . Voucher material. Midway Atoll , on a bryozoan, 23.ix.2002 , one colony, 3.5 mm high, without gonothecae, coll. A. Faucci , ROMIZ B5445 .— Laysan Island , on Halimeda sp. , 17.ix.2002 , one colony, 5 mm high, with gonothecae, coll. A. Faucci , ROMIZ B5446 . Remarks. A taxonomic account of Bicaularia tongensis ( Stechow, 1919b ) in Hawaii has been given earlier ( Calder 2020 ). New records of the species from the region are added here from Midway Atoll and Laysan Island. A thorough account of this species, accompanied by a synonymy list, has been provided by Song (2019) and Song et al . (2019) . Reported Distribution. Hawaiian archipelago. Oahu: Kaneohe Bay, Moku Manu Island ( Coles et al . 2002a , as Sertularella tongensis ; Calder 2020 ). Elsewhere. Indo-Pacific; Caribbean Sea; Mediterranean Sea ( Song et al . 2019 ). If Sertularella exilis Fraser, 1938 is conspecific, the species also occurs in the eastern Pacific ( Fraser 1938 , 1948 ).