Ophioteresis beauforti nov. spec

1 specimen, Inhaca Island, Delagoa Bay near Lorenço Marques, coll. Prof. Dr. C. J. van der Horst. This animal closely resembles Ophioteresis elegans Bell, 1892 (Proc. Zool. Soc. London, p. 178, Pl. XI, Fig. 1—5) and Ophiothela tigris (Lyman, 1871, III. Catal. Mus. Comp. Zool. VI, p. 10 in Mem. Mus. Comp. Zool. Harvard Coll. II), both described more in detail by MORTENSEN, 1913 (Mindeskrift for Japetus Steenstrup, X, København). See also SOLLAS, 1914, in Phil. Trans. R. Soc. London, ser. B, vol. 204, Pl. 9, Fig. 2. It differs, however, in having the skin of the upper side of the arms covered by rough thorny nodules, while the smooth grains on the upper side of the disc occur here only between the large radial shields.