Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau Author Gil, Marta 0000-0002-8985-332X Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar e Centro de Investigación Mariña (CIM-Uvigo), Universidade de Vigo. Campus Lagoas-Marcosende. 36310 Vigo. Spain & martag @ uvigo. gal; https: // orcid. org / 0000 - 0002 - 8985 - 332 X martag@uvigo.gal Author Ramil, Fran 0000-0002-9146-8201 Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar e Centro de Investigación Mariña (CIM-Uvigo), Universidade de Vigo. Campus Lagoas-Marcosende. 36310 Vigo. Spain & Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar e Centro de Investigación Mariña (CIM-Uvigo), Universidade de Vigo. Campus Lagoas-Marcosende. 36310 Vigo. Spain & framil @ uvigo. gal; https: // orcid. org / 0000 - 0002 - 9146 - 8201 * Corresponding author framil@uvigo.gal text Zootaxa 2025 2025-01-29 5577 1 1 89 https://doi.org/10.11646/zootaxa.5577.1.1 journal article 10.11646/zootaxa.5577.1.1 1175-5334 14763362 A5924C49-3957-4A8A-BD8E-D0FE741D6B1F Eudendrium album Nutting, 1898 Eudendrium album Nutting, 1898: 362–363 , pl. 14 fig. 1.— Leloup, 1952: 124 , fig. 61.— Marques et al. , 2000: 77 , figs 1–7.— Schuchert, 2008: 690 , figs 6–7.— Schuchert, 2012: 316–317 , fig. 278. Material examined. BISSAU-0810, stn BS191, 10º18'25"– 10º19'20"N , 16º08'47"– 16º08'47"W , 24–25 m , 3-XI-2008 : two colonies without gonophores, of which one growing on an unidentified hydroid. BISSAU-0810, stn BS193, 10º21'13"– 10º21'51"N , 16º10'17"– 16º10'56"W , 20–21 m , 3-XI-2008 : one colony without gonophores, growing on a bryozoan. Remarks. The presence of two sizes of macrobasic euryteles, particularly the larger one, is a distinctive feature of E. album ( Schuchert 2012 ) . Our colonies represent the first record of E. album for Guinea-Bissau . Biology. This species has been found growing on stones, algae and other hydroids ( Schuchert 2012 ). In the northern hemisphere, fertile material has been found between January and August ( Schuchert 2012 ). In our material, some colonies were found growing on unidentified hydroids and a bryozoan. Distribution. Schuchert (2008) pointed out that most identifications of E. album do not include information on the cnidome, and should therefore be considered only as tentative. Eudendrium album is a boreo-Atlantic species, known to occur from Norway to Galicia, in the Mediterranean Sea ( Schuchert 2008 , 2012 ) and in Mauritania ( Gil & Ramil 2017a ). Its bathymetric range extends from 0 to 1000 m ( Schuchert 2008 ). Our material was collected at depths between 20–25 m .