OCR Text |
Show 512 DR. J. E. GRAY ON SPONGES. [May 9, 1. CHALINA, Bowerb. B. Sp. i. 208. Sponge branched, palmate, or inosculated. Skeleton of solid cylindrical horny fibres, with small imbedded spicules. Spicules fusiform or needle-like, slender, and thick. CHALINA OCULATA, Bowerb. B. Sp. p. 360. f. 262. Spongia leevigata, Montag. Halichondria oculala, Johnston. B.M. See other species described by Dr. Bowerbank (Brit. Sp. p. 361). 2. ISODICTYA. Network of sponge symmetrical, with radiating and transverse lines of fusiform needle-like spicules. Spicules fusiform or needle-shaped. The ovisac internal, membranaceous, not spinose. Isodictya, Bowerb. B. Sp. i. p. 197; ii. p. 9; 0. Schmidt, Spon. Adriat. Supp. ii. p. 17. Reniera, sp., Nardo; O. Schmidt. * Spicula fusiform, smooth. 1. ISODICTYA CINEREA, Bowerb. B. Sp. ii. p. 27. Halichondria cinerea, Johnston. B.M. See other species described by Dr. Bowerbank (B. Sp. pp. 275 and following). ** Spicula needle-like, spinose, flexuous. 2. ISODICTYA LURIDA, Bowerb. B. Sp. p. 336. Hab. Northumberland. 3. HALISPONGIA. Sponge massive, with a reticulated horny skeleton. The larger fibres with irregularly dispersed internal spicula; the small ones without spicula. Halispongia, Bowerb. B. S. ii. p. 207; 0. Schmidt, Sp. Adriat. Supp. ii. p. 9 = Cacospongia, sp., A. Schmidt. HALISPONGIA CAVERNOSA. Bahama Sponge of Commerce, Bowerbank, B. S. i. p. 207, t. 36. f. 378, ii. p. 13. 4. ACANTHELLA, O. Schmidt, p. 65. Sponge branched, often spinose, flexuous ; fibres compressed ; skin sunk, very porous. Spicules cylindrical, elongate, often flexuous, placed longitudinally in the membranes. 1. ACANTHELLA ACUTA, 0. Schmidt, p. 65, t. 6. f. 7; Suppl. p. 2, t. l.f. 1. T-.JVL 2. ACANTHELLA OBTUSA, 0. Schmidt, p. 65, t. 6. f. 8. |