Spong. 1 
SPONGIDA. 
BY 
Stuart 0. Ridley, B.A. 
List of Papers published on Recent Sponges. 
1. Bowerbank, J. S (The late). Description of Five New Sponges, dis- 
covered by Dr. A. B. Meyer on the Philippine Islands and New 
Guinea. P. Z. S. 1877, p. 456. 
2. Carter, H. J. On two Vitreo-hexactinellid Sponges. Ann. N. H. 
(4) xix. p. 121, pi. ix. 
3. . Arctic and Antarctic Sponges, &c. Op. cit. xx. p. 38, pi. i. 
4. . Description of Mauricea, a Psammonernatous Sponge (men- 
tioned incidentally). Tom. cit. p. 174. 
5. Fullagar, — . Note on the development of the Spicules of Spongilla 
fluviatilis. Sci. Goss. June, 1877 ; and M. Micr. Journ. xviii. p. 45. 
6. Gremma, E. O. Description of new Sponges discovered during his 
Aral and Caspian researches. Aralo-Caspian Researches, vol. ii. 
(St. Petersburg. In Russian.) (a) Tetrad i. 1876, p. 80, pis. ii. 
& iii. (parts) ; (5) Tetrad 2, 1877, p. 29, pi. ix. 6gs. 1-6. 
7. Higgin, T. Description of some Sponges obtained during a cruise of 
the steam yacht Argo, &c. Ann. N. H. (4) xix. p. 291, pi. xiv. 
8. Hyatt, A. Revision of the North American Poriferm ; with remarks 
upon foreign species. Part ii. Mem. Bost. Soc. ii. p. 481, pis. xv., 
xvi., & xvii. (photographs). 
9. . On the Embryology of Sponges. P. Bost. Soc. xix. p. 12. 
10. Keller, C. Remarks on Three Layers in Sponges. Verb. Ges. 
Zurich, 1875-76, p. 68. 
11. Kent, W. Saville. Note in Ann. N. H. (4) xx. p. 448, on Hali- 
physema. 
12. Murie, j. On Steere’s Sponge (a new genus of the Hexactinellid 
group of the Spongida. Tr. L. S. (2) i. pp. 219-234, pis. xxxvi. & 
xxxvii. (With Appendix by H. J. Carter.) 
