| OCR Text |
Show 522 DR. j. E. G R A Y O N SPONGES. [May 9, kinds:-1. Needle-like, elongate. 2. Cylindrical or subfusiform, vermiculoid, varying in the manner in which they are twisted. BUBARIS VERMICULARIS. Hymeraphia vermicularis, Bowerb. B. S. ii. p. 141, f. 5. 16. CIOCALYPTA. Sponge cylindrical, massive, with numerous attenuated branches, sometimes forked at the tips. Skeleton of compact interlaced spicules, which divide into fasicules near the surface of the branches ; the fascicules dilated at the end supporting the outer surface, and having a series of small cavities below the outer coat. Spicules fusiform or needle-like, stout, variable in size. Ciocalypta, Bowerb. B. S. i. p. 179, ii. p. 81, t. 30. f. 360, 361. CIOCALYPTA PENICILLUS, Bowerb. B. S. i. p. 188, ii. p. 81. 17. RASALIA. Sponge incrusting or arborescent, branched. Spicules of two kinds, united by a horny matter:-1. Needle-shaped, thick, tubercular. 2. Pin-shaped, smooth. RASALIA VIMINALIS. Ftaspalia viminalis, O. Schmidt, p. 59, t. 5. f. 12. B.M. 18. ADOCIA. Sponge sessile or branching and inosculating, smooth ; oscules on the sides of the branches. Skin without spicules. Skeleton rather irregularly netted. Spicules fusiform, stout, short. ADOCIA SIMULANS. Isodictya simulans, Bowerb. B. S. p. 308, f. 299. 19. PHILOTIA. Sponge incrusting, smooth; oscules minute. Skin regularly netted, spiculous. Spicules isolated, forming a network:-1. Fusiform, slender. 2. Cylindrical or needle-shaped. PHILOTIA VARIANS. Isodictya varians, Bowerb. B. S. ii. p. 281, f. 309. ** Spicules pin-shaped. 20. ABILA. Sponge branched, flexible. Spicules united with horny matter, of three kinds :-1. Pin-shaped, smooth; head rather marked, large. 2. Pin-shaped, nodulous, small. 3. Fusiform, very slender, arched or doubly arched. |
