| OCR Text |
Show 1867.] DR. j. E. G R A Y O N SPONGES. 549 Spicules:-1. Fusiform, with blunt ends. 2. Stellate, with small centre and long cylindrical blunt rays. 3. Stellate, spherical; body large; rays numerous, short, broad, conical; the rays often show a central line. 2. TETHEA INGALLI, Bowerb. ib. i. pp. 51, 52, f. 161, 164. Hab. . Spicules stellate :-1. Rays few (seven or eight), cylindrical, blunt, larger than the small central body. 2. Rays far apart (eight or nine), conical, acute, about as long as the diameter of the central body. II. Ovisacs scattered in the flesh and outer surface of the sponge. 4. ERYLUS. Sponge expanded, mammillated, ending in an oscule. Spicules of three kinds:-1. stellate; 2. ternate, rays forked; 3. subcylindrical, waved. With oblong ovisacs, formed of claviform spines. ERYLUS MAMMILLARIS. Stelletta mammillaris, O. Schmidt, p. 48, t. 5. f. 1. B.M. 5. TRIATE. Sponge irregular, tuberose. Spicules of two kinds :-1. stellate; 2. ternate, with rays forked. Ovisacs roundish or elliptical, formed of claviform spines. TRIATE DISCOPHORA. Stelletta discophora, O. Schmidt, p. 47, t. 4. f. 5. B.M. (See also Bowerb. B. S. f. 50, 51.) 6. CAMINUS. Sponge globose, with a large single subcentral cavity. Bark netted. Spicules cylindrical, filiform, blunt at the end. Ovisacs oblong, elliptical. CAMINUS VULCANI, O. Schmidt, p. 48, t. 3. f. 27, t. 4. f. 6. Hab. Adriatic Sea. B.M. Fam. 2. PLACOSPONGIADiE. Sponge branched, coral-like, with a central axis and a hard outer coat entirely formed of solidified ova. The axis and outer lamina separated from each other by a layer of sarcode, strengthened with bundles of spicules. PLACOSPONGIA, Gray, P. Z. S. 1867. PLACOSPONGIA MELOBESIOIDES, Gray, P. Z. S. 1867, p. 128 (cum fig.). Hab. Borneo. |
