| OCR Text |
Show 1867.] DR. J. E. GRAY ON SPONGES. 537 end. 2. Needle-shaped, conical, strongly spined all over. 3. Equianchorate, bi- or tridentate. 4. Bihamate. HYMEDESMIA ZETLANDICA, Bowerb. B. S. i. p. 190, ii. p. 152, f. 296, 371. 18. TEREUS. Sponge massive, sessile, smooth, regularly reticulated, with a square mesh. Skin spiculose. Spicules of two kinds:-1. Needle-shaped, thick, spinulate all over. 2. Equibianchorate, two-spined, two-fringed, of various sizes. TEREUS FIMBRIATUS. Isodictya fimbriata, Bowerb. ib. ii. p. 337, f. 150; 0. Schmidt, Supp. ii. t. 1. f. 18. 19. CARMIA. Sponge-coating thin, smooth. Oscules dispersed. Skin spiculose. Spicules of four kinds:-1. Subclavate, needle-like, and very slender. 2. Fusiform, tricurvate. 3. Inequianchorate, bidentate, or subpal-mate. 4. Bihamate, contorted. 1. CARMIA MACILENTA. Hymeniacidon macilenta, Bowerb. B. S. ii. p. 176. 2. CARMIA FLOREA. Hymeniacidon floreum, Bowerb. ib. ii. p. 190. • ** Flukes oblong, concave, of rather unequal length, with a single central apical tubercle at each end. 20. CORYBAS. Sponge-coating lobate or branched, regularly reticulated externally. Skin spiculose. Oscules dispersed. Spicules:-1. Needle-shaped, short, and stout. 2. Needle-shaped, subcylindrical, slender. 3. Bihamate, extra-umbonate. 4. Equianchorate; flukes oblong, concave, with a single central apical tubercle at each end (Bowerb. f. 139). CORYBAS LOBATA. Isodictya lobata, Bowerb. B. S. ii. p. 326, f. 139. *** Flukes cup-shaped, acute on each side. 21. INGALLIA. Sponge ? Spicules:-1. Equianchorate, with a hemispinal cup at each end, abundant, recumbent on the membranes. INGALLIA CUPULIFERA. Desmacidon, sp., Bowerb. B. S. i. p. 252, f. 151. Hab. ? |
