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Show 1886.] POSITION A N D CLASSIFICATION OF SPONGES. 615 558. Gray, J. E. Venus's Flower-basket (Euplectella speciosa). Ann. M. H. ser. 3, vol. xviii. pp. 487^90 (1866). 559. . Venus's Flower-basket (Euplectella). Pop. Sci. Beview, vol. vi. pp. 239-247 (1867). 560. . Further observations on Venus's Flower-basket (Euplectella speciosa). Ann. M. N. H. ser. 3, vol. xix. pp. 44-45 (1867). 561. . Additional Notes on Euplectella speciosa. Ann. M. N. H. ser. 3, vol. xix. pp. 138-140 (1867). 562. . Notes on Hyalonema lusitanicum, and on the Genus in general. P. Z. S. 1867, pp. 117-125 (1867). 563. . On Placospongia, a new Generic Form of Spongiadae in tbe British Museum. P. Z. S. 1867, pp. 127-129 (1867). 564. . Notes on tbe Arrangement of Sponges, witb the Description of some new Genera. P. Z. S. 1867, pp. 492-558 (1867). 565. . Observations on Dr. Bowerbank's Paper on Hyalonema lusitanicum. P. Z. S. 1867, pp. 1001-1003 (1867). 566. . On Dr. Bowerbank's "Observations on Dr. Gray's 'Notes on tbe Arrangement of Sponges, &c.'" P. Z. S. 1868, pp. 532-533 (1868). 567. . Note on Theonella, a new Genus of Ooralloid Sponges from Formosa. P. Z. S. 1868, pp. 565-566 (1868). 568. . Notes on the Ceratellidae, a family of Keratose Sponges. P. Z. S. 1868, pp. 575-579 (1868). 569. . Note on Xylospongia cookii, a new Genus of Palmated Sponges in the collection of the British Museum. P. Z. S. 1868, p. 637 (1868). 570. . Observations on Sponges and on their Arrangement and Nomenclature. Ann. M. N. H. ser. 4, vol. i. pp. 161-173 (1868). 571. . On tbe peculiar Structure and Function of tbe Spicules of Hyalonema. Ann. M. N. H. ser. 4, vol. i. pp. 292-295 (1868). 572. . Note on Hyalonema boreale, Loven. Ann. M. N. H. ser. 4, vol. i. p. 484 (1868). 573. . Note on a new Japanese Coral (Isis gregorii), and on Hyalonema. Ann. M. N. H. ser. 4, vol. ii. p. 264 (1868). 574 . On a new Free Form of Hyalonema sieboldii, and its manner of Growth. Ann. M. N. H. ser. 4, vol. ii. pp. 264-276 (1868). 575. . On Tetilla euplocamus and Hyalonema boreale. Ann. M. N. H. ser. 4, vol. ii. p. 319 (1868). 576 . Note on Hyalonema schultzei, Semper. Ann. M. N. H. ser. 4, vol. ii. pp. 373-378 (1868). 577 . On the name Alcyoncellum. Ann. M. N. H. ser. 4, vol. ii. pp. 390- 391 (1868). 578 . Note on Ianthella, a new genus of Keratose Sponges. P. Z. S. 1869, pp. 49-51 (1869). 579 On tbe Manner of Growth of Hyalonema. Ann. M. N. H. ser. 4, vol. iii. pp. 192-196 (1869). 580. . Note on a new Genus of Sponge from West Australia (Echino-spongia australis=Axos cliftoni). Ann. M. N. H. ser. 4, vol. vi. p. 272 (1870). 5gl Notes on Anchoring Sponges (Pheronema, Holtenia). Ann. M. N. H. ser. 4, vol. vi. pp. 309-312 (1870). gg2 Note on a new Genus of Sponge from West Australia. Ann. M. N. H. ser. 4, vol. vi. p. 346 (1870). 583 . Note on Spongia linteiformis and S. lycopodium, Esper. Ann. M. N. H. ser. 4, vol. viii. p. 142 (1871). 584 On the Animal of the Glassrope. Ann. M. N. H. ser. 4, vol. ix. pp. 324-325 (1872). |