| OCR Text |
Show 1867.] DR. J. E. GRAY ON SPONGES. 543 ** Sponge without star-like spicules. 9. ANCORINA, 0. Schmidt, p. 51. Sponge subgiobose or lobed, without any star-like spicules. Spicules elongate, outer end two- or three-rayed, hooked, sometimes bifid. 1. ANCORINA CREBRA, O. Schmidt, p. 51, t. 3. f. 28. 2. ANCORINA VIRESCENS, O. Schmidt, p. 52, t. 3. f. 29. II. Sponge subgiobose, with groups of triforked or tricurvate spicules extended beyond the surface, without any internal tricurvate or stellate spicules. 10. TETHYA. Sponge oval, hispid. Skin thin. Spicules of four kinds:- 1. Fusiform, elongate. 2. Fusiform, three-pronged, projecting beyond the surface. 3. Bihamate. 4. Clavate, with a short conical flat head, with a conical process on one side. Tethea, § 1, Bowerb. B. S. p. 83. Ancorina, Schmidt. 1. TETHYA CRANIUM, Lamk. Tethya cranium, Johnston, B. S. p. 85, t. 1. f. 1-8; Bowerb. B. S. i. p. 183, ii. p. 83, f. 77-82, 247, 251, 252, 343, 344, 362; O. Schmidt, Supp. ii. t. 1. f. 14. Alcyonium cranium, Muller, Z. D. Spongia pilosa, Montag. B. S. p. 119, t. 13. f. 12. B.M. Hab. North Sea. 2. TETHYA SIMILLIMA, Bowerb. B. S. p. 725. Hab. Arctic Regions. III. Sponge expanded; coating marine bodies with external spreading spicules with stellate tips. fl. MESAPOS. Sponge-coating hispid. Spicules:-1. Clavate, attenuated, large, slender. 2. Clavate, cylindrical, smooth ; apex spinose, stellate. MESAPOS STELLIFERA. Hymeraphia stellifera, Bowerb. ib. ii. p. 146, f. 370. 12. LAOTHOE. Sponge ? Spicules of three forms:-1. Fusiform, vertically spined. 2. Clavate, elongate, slender, smooth. 3. Needle-shaped, inflated, smooth ; apex divided, substellate. LAOTHOE VERTICILLATA. Hymeraphia verticillata, Bowerb. ib. p. 145, f. 240. |
