1886.] POSITION AND CLASSIFICATION OF SPONGES. 647 



1415. SoUas, W. J. On Plectronclla papillosa, a new genus and species of 

 Echinoneinatous Sponge. Ann. M. N. H. ser. 5, vol. iii. pp. 17-28 (1879). 



1416. . Note on the Structure and Affinities of the genus Catagma. Ann. 



M. N. H. ser. 5, vol. iii. pp. 169-170 (1879). 



1417. . On Pluiretronema zingiheris, a new genus and species of Kenierid 



Sponge. Ann. M. K H. ser. 5, vol. iii. pp. 404-407 (1879). 



1418. . On Plocamia plena, a new genus and species of Echinonematous 



Sponge. Ann. M. N. H. ser. 6, vol. iv. pp. 44-53 (1879). 



1419. . Observations on Bactylocalyx pumiccus (Stutchbury), with a 



description of a new variety, Bactylocalyx stutchburyi. J. R. Micr. 

 Soc. vol. ii. pp. 122-133 (1879). 



1420. . On the replacement of Siliceous Skeletons by Carbonate of Lime. 



Eep. Brit. Assoc. 1879, vol. xlix. p. 350 (1879). 



[1421.] . On the replacement of Siliceous Skeletons by Carbonate of Lime. 



(Abstr.) J. R. Micr. Soc. vol. iii. p. 282 (1880). 



1422. . On the Structure and Life-history of a Sponge. P. Bristol Nat. 



Soc. new series, vol. iii. pp. 20-37 (1880). 



1423. . The Sponge-fauna of Norway ; a Eeport on the Kev. A. M. 



Norman's Collection of Sponges from the Norwegian Coast. Ann. M. 

 N. H. ser. 5, vol. v. pp. 130-145 (1880). 



1424. . The Sponge-fauna of Norway; a Eeport on the Rev. A. M. 



Norman's CoUeptiou of Sponges from the Norwegian Coast. Ann. M. 

 N. H. ser. 5, vol. v. pp. 241-259 (1880). 



1425. . The Sponge-fauna of Norway ; a Eeport on the Eev. A. M. 



Norman's Collection of Sponges from the Norwegian Coast. Ann. M. 

 N. H. ser. 5, vol. v. pp. 396-409 (1880). 



1426 . On Fhnt Nodules from the Trimmingham Chalk. Ann. M. N. 



H. ser. 5, vol. vi. pp. 384-397 (1880). 



1427 . On Flint Nodules from tlie Trimmingham Chalk. Ann. M. N. 



H. ser. 5, vol. vi. pp. 437-461 (1880). 



1428 . On Sponge-spicules from the Chalk of Trimmingham, Norfolk. 



Rep. Brit. Assoc, pp. 586-587 (1880). 



1429. . On the Structure and Affinities of the genus Prutospongia (Salter). 



J. G. Soc. vol. XXXV. pp. 362-366 (1880). 



1430. . On Astroconia granti, a new Lyssakine Ilexactinellid from the 



Silurian Formation of Canada. J. G. Soc. vol. xxxvii. pp. 254-260 ( 1881 ). 



1431. . On Astroconia granti, a new Lyssakine Hexactinellid from the 



Sihirian Formation of Canada. J. G. Soc. vol. xxxvii. p. 480 (1881). 



1432. . Note on the occurrence of Sponge-spicules in Chert from the 



Carboniferous Limestone of Ireland. Ann. M. N. H. ser. 5, vol. vii. 

 pp. 141-143 (1881). 



1433. . The Sponge-iiuma of Norway; a Eeport on the Eev. A. M. 



Norman's Collection of Sponges from the Norwegian Coast. Ann. M. 

 N. B. ser. 5, vol. ix. pp. 141-166 (1882). 



1434. . The Sponge-fauna of Norway; a Eeport on the Eev. A. M. 



Norman's Collection of Sponges from the Norwegian Coast. Ann. M. 

 N. H. ser. 6, vol. ix. pp. 426-453 (1882). 



1435. . Sponges. Cassell's Natural History, vol. vi. pp. 312-331 (1882). 



1436. . Description of Fossil Sponges from the Inferior Oolite and on 



some from the Great Oolite. J. G. Soc. vol. xxix. pp. 541-543 (1883). 



1437. . The Estuaries of the Severn and its Tributaries. An inquiry into 



the nature and origin of Tidal Sediments and Alluvial Flats. J. G. Soc. 

 vol. xxix. pp. 611-626(1883). 



1438 . On the origin of Freshwater Faunas. A study in Evolution. 



Tr. R. Bublin Soc. vol. iii. pp. 87-118 (1884). 



