| OCR Text |
Show 516 DR. J. E. GRAY ON SPONGES. [May 9, 5. N^ENIA. Sponge thin, with expanded spreading spicules. Spicules dispersed over the membrane :-1. Fusiform, with a series of rounded distant belts forming ovate knots. 2. Fusiform, blunt, with regular whorls of small spines. 3. Cylindrical, with a large central longitudinal slit on each end. NJENIA VERTICILLATA. Hymeraphia verticillata, Bowerb. B. S. i. p. 268, f. 238-240. 6. RAPHYRUS. Sponge massive. Skeleton reticulated ; fibres formed of numerous fusiform or needle-like spicules, irregularly crowded together without order, and united by a very small quantity of horny matter. Raphyrus, Bowerb. B. S. i. p. 207, ii. p. 354 ; O. Schmidt, Spon. Adriat. Supp. ii. p. 18 = Papillina, O. Schmidt. 1. RAPHYRUS CELATUS. Halichondria celata, var. a, Johnst. B. S. p. 125. 2. RAPHYRUS GRIFFITHSII, Bowerb. B. S. i. p. 207, t. 13. f. 265, ii. p. 354. Papillina subera, O. Schmidt, Sp. Adriat. 69, iii. 18. B.M. Hab. England. Fam. 8. PHAKELLIADJE. Sponge expanded, cup-shaped or flabellate ; spicula in bundles, cylindrical, numerous, with a closely netted horny skeleton, forming branched and rebranched lines, which do not inosculate. The structure was well described by Dr. Grant (Edin. New Phil. Journ. i. p. 349). PHAKELLIA. (Sea Fan-Sponge.) Sponge fan- or funnel-shaped, with numerous cylindrical bundles of spicules, which branch and rebranch, radiating to the surface. Spicules fusiform or needle-shaped, often flexuous. Phakellia, Bowerb. B. S. i. p. 186, ii. p. 7; O. Schmidt, Spong. Adriat. Supp ii. p. 15. PHAKELLIA VENTILABRUM, Bowerb. B. S. i. p. 186, t. 33. f. 367, ii. p. 122 (cyathiform) ; O.Schmidt, Supp. ii. t. 1. f. 16. B.M. Spongia ventilabrum, Linn. S. N. ; Grant, Edinb. N. P. J. i. p. 349, h. p. 122, t. 2. f. 5. S. zetlandica, Jameson. S. ventifabriformis, Gray, B. P. p. 359. Halichondria ventilabrum, Johnst. B. S. p. 107, t. 7. II. ventilabra, Flem. B. A. p. 523. Halispongia ventilabra, Blainv. Spongia xerampelina, Grant. |
