Additional shallow-water thecate hydroids (Cnidaria: Hydrozoa) from Guadeloupe and Les Saintes, French Lesser Antilles Author Galea, Horia R. text Zootaxa 2010 2570 1 40 journal article 10.5281/zenodo.197380 623f5942-0074-4d90-b034-a0b102d5a3e6 1175-5326 197380 Halecium tenellum Hincks, 1861 (fig. 3M–O) Halecium tenellum Hincks, 1861 : 252 , pl. 6 figs 1–4.― Schuchert, 2001 : 84 , fig. 70. Material examined . Stn.9 : 21.11.2009 , 21 m—numerous sterile stems, 4–5 mm high, epizoic on Sertularella diaphana ( Allman, 1885 ) , morphotype 1. Stn.10 : 0 2.12.2009 , 15–20 m—several sterile colonies, 3–4 mm high, on Thyroscyphus marginatus ( Allman, 1877 ) . Stn.11 : 30.11.2009 , 15–18 m—numerous sterile stems, to 8 mm high, on Sertularella diaphana ( Allman, 1885 ) morphotype 1. Caribbean records . See Calder & Kirkendale (2005) . World distribution . Cosmopolitan ( Peña Cantero & García Carrascosa 2002 ).