A review of the siphonophore species mentioned in Haeckel’s (1888 b) Challenger Monograph Author Pugh, P. R. text Zootaxa 2019 2019-10-07 4683 1 1 32 journal article 25302 10.11646/zootaxa.4683.1.1 a73cdea3-d8c8-4c29-8aaf-5d0570fac582 1175-5326 3474635 F7184467-173E-4B5C-8A20-5436E5FE61DA Sphenoides tetragona , Haeckel. Bassia tetragona , Haeckel. Sphenoidesobeliscus Haeckel. Bassia obeliscus , Haeckel . ? Sphenoides perforata , Haeckel. ? Bassia perforata , L. Agassiz. Sphenoides australis , Huxley. Bassia quadrilatera , Quoy & Gaimard. Aglaisma eschscholtzii, Huxley. Calpe pentagona , Quoy & Gaimard. Aglaisma gegenbauri , Haeckel Calpe gegenbauri , Haeckel. ? Agalisma elongata Huxley. ? Calpe huxleyi , Haeckel. ? Ersaea gaimardi , Eschscholtz. ? Diphyopsis campanulifera , Haeckel. Ersaea compressa , Haeckel . Diphyopsis compressa , Haeckel. Ersaea dispar , Haeckel. Diphyopsis dispar , Haeckel.