LIST OF WORKS. 
Spong . 3 
23. Marenzeller, E. v. Pnrifera , Anthozoa , Ctenophora , and Worms 
of Jan Mayen, D. Internationale Polarforschuug 1882-83, D. Oest- 
erreichische Polarstation Jan Mayen iii, pp. 1-6. 
24. Matthew, G. F. Illustrations of the Fauna of St. John's Group. 
Tr. R. Soc. Canada, iv (1885), pp. 29 & 30. 
25. Noll, F. C. Spongilla glomerata. Zool. Anz. ix, pp. 682-684. 
26. Petr, Frant. Spongilla fragilis , Leidy, in Bohmen. SB. bohm. 
Ges. 1886, pp. 99-111. 
27. Poota, Phil. Ueber eiuige Spongien aus dem Dogger des Funf- 
kirchner Gebirges. MT. ung. geol. Anst. 
28. . Le ddveloppement des Sponges fossiles. Arch. Slav. Biol, i, 
pp. 23-25. 
29. Poleschajew, K. N. A stroenie i klassificatzi rogovuich gubok. 
(Ori the Structure and Classification of the Ceratosa.) Arb. St. 
Petersb. Ges. xvi, p. 17. 
30. Potts, E. Freshwater Sponges from Newfoundland. P. Ac. Philad. 
1886, pp. 227-230 [Ann. N. II. (5) xviii, pp. 243-246]. 
31. Rathbun, Rich. The Porifers (Useful Aquatic Animals, U.S.). 
The Fisheries and Fish Industries, U.S. Sect. pp. 843-850. 
32. Rauff, H. Ueber die Gattung Hindia , Duncan. SB. Niederrhein. 
Ges. Bonn. ; transl., Ann. N. H. (5) xviii, pp. 152-159 & 169-179. 
33. Ridley, S. 0., & Dendy, A. Preliminary Report of the Monaxo- 
nida collected by II.M.S. ‘ Challenger.’ Ann. N. H. (5) xviii, 'pp. 
325-351 & 470-493. 
34. Schulze, F. E. Ueber den Bau und das System der Hexactinelliden. 
Abb. Ak. Berk 1886, 35 pp. 
35. Seely, H. M. The Distribution and Species of the Genus Strepho- 
chetus.. Am. J. Sci. (3) xxxii, pp. 31-34. 
36. Sollas, W. J. Preliminary Account of the Tetractinellid Sponges 
• dredged by the 4 Challenger,’ 1872-76. Parti. The Choristida. P. 
R. Dubl. Soc. (n.s.) v, pp. 177-199. 
37. . Letter on Dr. K. Ileider’s paper on Oscarella lobularis. Zool. 
Anz. ix, pp. 518 & 519. 
38. -. Note on the Artificial Deposition of Crystals of. Calcite on 
Spicules of a Calcisponge. P. R. Dubl. Soc. v, p. 73. 
39. Yejdovsky, F. Eiuiges ueber “ Spongilla glomerata .” Zool. Anz. 
ix, pp. 713-715. 
40. Yosmaer, G. C. J. Einige.neuere Arbeiten fiber Schwamme. Biol. 
Centralbl. vi, pp. 181-188 & 193-201. 
41. . Porifera . Bronn’s Thierreichs, pp. 369-496. 
42. Wierzejski, A. O gabkach slodnowodnych galicyjskich. (On the 
Fresh-water Sponges of Galicia.) Ber. Ak. Krakau, xix, pp. 205-223. 
43. . Le developpement des gemmules des Eponges d’eau douce 
d’Europe. Arch. Slav. Biol, i, bp. 26-47. ' 
