Spong. 1 
SPONGIIDA. 
BY 
Stuart 0. Ridley, B.A., F.L.S, 
Chief Papers on Recent Sponges. 
Carter, H. J. Position of the Sponge-spicule in the Spongida, and 
"^ postscript on the identity of Squamulina scopula with the Sponges. 
Ann. N. H. (5) i. p. 170. 
2. . On Teichonia^ a New Family of Calcareous Sponges, with 
Descriptions of two species. Op. cit. ii. p. 35, pi. ii. 
3. . Parasites of the Spongida. Tom. cit. p. 157. 
4. Codes, E., & Yarrow, H. C. In ‘ Notes on the Natural History of 
Fort Macon, N.C., and vicinity.’ P. Ac. Philad. 1878, p. 297. 
5. CzERNiAVSKY, V. Littoral Sponges of the Black and Caspian Seas : 
an introductory investigation [in Russian]. Bull. Mosc. liii. p. 375, 
pis. v.-viii. 
Enumerates the species, giving names and sometimes figures of new 
species, with general remarks (vide infr^). 
6. Dawson, G. M. On some Canadian Species of Spongilla. Canad. 
Nat. (n.s.) viii. p. 1, plate. 
7. Dybowsky, W., Mittheilungen fiber Spongien. i., ii. Zool. Anz. i. 
pp. 30 & 53. 
8. Ganin, M. ZurEntwickelung der Zool. Anz. i. 
p. 195. 
9. Keller, C. Ueber den Bau von Reniera semituhulosaj O. S. Ein 
Beitrag zur Anatomie der Kieselschwamnie. Z. wiss. Zool. xxx. 
pp. 563-586, pis. xxxvi. & xxxvii. 
10. Kent, W. S. A New Field for the Microscope. Pop. Sci. Rev. 
(n.s.) ii. p. 113, pis. iii. & iv. 
11. . Notes on the Embryology of Sponges. Ann. N. H. (5) ii. 
p. 1 39, pis. vi. & vii. 
12. Marenzeller, E. von. Die Coelenteraten, Echinodermen, und 
