On some tropical hydroids (Cnidaria: Hydrozoa), with descriptions of four new species Author Galea, Horia R. Hydrozoan Research Laboratory, 405 Chemin Les Gatiers, 83170 Tourves, France. Author Maggioni, Davide Università degli Studi di Milano-Bicocca, Dipartimento di Biotecnologie e Bioscienze, Piazza della Scienza 2, 20126 Milano, Italy. & Marine Research and Higher Education (MaRHE) Center, Università degli Studi di Milano-Bicocca, 12030 Faafu Magoodhoo, Maldives. text Zootaxa 2024 2024-03-20 5428 1 1 57 http://dx.doi.org/10.11646/zootaxa.5428.1.1 journal article 10.11646/zootaxa.5428.1.1 1175-5326 10842930 041905ED-FCED-4ED5-8248-E9AA8D6271E9 Anthoathecata : Filifera: Eudendriidae Myrionema amboinense Pictet, 1893 is closely-related to a conspecific sequence obtained from aquarium material from the University of Innsbruck, Austria (P. Schuchert, pers. comm.), whereas the two identical 16S rRNA sequences of Eudendrium sp. (lacking mature gonophores and, hence, unidentifiable) did not match any known sequenced congener ( Fig. 25B ).