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Show 1867.] DR. J. E. GRAY ON SPONGES. 511 with central lines of spicula and grains of sand, and other extraneous matter, especially in the larger and thicker fibres. Stematumenia, Bowerb. Ann. & Mag. N. II. 1845, xvi. p. 406, t. 14. f. 1, 2. Hircinia, sp., O. Schmidt. Sarcotragus, O. Schmidt. STEMATUMENIA BAHAMENSIS. Bahama sponge, Bowerb. B. Sp. i. p. 273, f. 269, f. 381. Hab. Bahama. Fam. 5. DYSIDEID.E. Sponge massive, formed of reticulated horny fibres, with sand (or the spicula of other sponges) imbedded in the centre, and covered with a more or less thick coat of horny matter. DYSIDEA. Sponge massive. Skeleton irregular, netted. Dysidea, Johnston, Brit. Sp. p. 251 ; Bowerb. B. Sp. 1862; O. Schmidt, Spon. Adriat. Supp. ii. p. 11. Duseideia, Johnston, B. Sp. p. 185, 1842. Spongelia, Nardo, 1844 ; O. Schmidt, 1862. Dr. G. Johnston described a sponge under the name of Spongia suberea in ' Mag. Nat. Hist.' vii. p. 491, f. 60, which, in his work on Sponges, he referred to the genus Dmeideia with a mark of doubt, observing at the same time " it is nearly allied to the Alcyonium ocellatum of Solander (Zooph. p. 180, t. 1. f. 6), and it is probable that the two productions are of the same nature, whatever they may be." They have proved both to be zoanthoid polypes. 1. DYSIDEA FRAGILIS, Johnston, B. Sp. p. 251 ; Bowerb. B. Sp. ii. p. 381, i. p. 211. f. 270-272. B.M. Duseideia fragilis, Johnston, B. Sp. p. 186, t. 13. f. 6, t. 14. f. 4. Halichondria areolata, Johnston, B. Sp. p. 121, t. 13. f. 4. Spongia fragilis, Mont. Wern. Mem. ii. p. 114, t. 16. f. 1, 2. See also :- Sponqelia elegans, Nardo ; O. Schmidt, p. 28, t. 3. f. 3. B.M. S. avara, O. Schmidt, p. 29, t. 3. f. 6. B.M. S. incrustans, O. Schmidt, p. 29, t. 3. f. 7. S. pallescens, O. Schmidt, p. 30, t. 3. f. 8. B.M. 2. DYSIDEA KIRKII, Bowerb. B. Sp. i. p. 211. Hab. Australia (not described). Fam. 6. CHALINID/E. Skeleton formed of regular, reticulated, anastomosing, horny fibres, which have one or more series of regular small siliceous spicules in the central lines. |
