Description Fig. 5. — Hornera mediterranea n. sp., branching features of colonies: A, holotype, MNHN-IB-2017-225. B1, large colony sparsely branched, B2, smaller colony densely ramified; C, large bushy colony; D, base of a colony encrusting a biogenic fragment; E, part of colony with lateral branches. Origin: A, C, same as holotype, Marseille, Riou Is., 60-65 m. B1, La Ciotat, 60 m, 27.VII.1992; B2, Marseille, Riou Is., 70 m, 8.XII.1971; D, Marseille, Grand-Conglue Is., 90 m, 2.III.1972; E, Marseille, Impérial du large, 2.II.1976. Scale bars: A-B, 1 cm; C, 2 cm; D-E, 2 mm. Photos: Jean-Georges Harmelin.