CHIEF WORKS ON RECENT SPONGES. SpOIXg. 2 
ai*e, besides, included with the Infusoria in the classification proposed in 
the work. 
7. Marshall, W. Untersuchungen fiber Dysideiden und Phoriospongien. 
Z. wiss, Zool. XXXV. p. 88, pis. vi.-viii. & woodcut. 
8. Merejkowsky, C. de. Reproduction des Eponges par bourgeonne- 
ment exterieur. Arch. Z. exper. viii, p. 117, pi. xxxi., to which the 
references below refer. Reported and figures reproduced in J. R. 
Micr. Soc. iii. p. 970, pi. xxi. 
9. Schmidt, O. Pie Spongien des Meerbusen von Mexico (und des 
Caraibischen Meeres). Zweites (Schluss-) Heft. (p. 33, pis. v.-x.) 
Jena: 1880, 4to. 
Conclusion of the work noticed in Zool. Rec. xvi. ; comprises the 
Hexactinellida, Tetractinellida, Monactinellida^ and a supplement to the 
Lithistiido} of Part i. 
10. Schulze, F. E. On the Structure and Arrangement of the Soft 
Parts in Euplectella aspergillum. Tr. R. Soc. Edinb. xxix. p. G61, 
pi. xvii. 
11. . Untersuchungen fiber den Bau und die Entwickelung der 
Spongien. ixte Mittheilungen. Die Plakiniden. Z. wiss. Zool. 
xxxiv. p. 407, pis. xx.-xxii. 
12. SoLLAS, W. J. The Sponge-Fauna of Norway; a Report on the 
Rev. A. M. Norman’s Collection of Sponges from the Norwegian 
Coast. Ann. N. H. (5) v. pp. 130, 241, & 396, pis. vi., vii., x.-xii., 
& xvii. 
13. VosMAER, G. C. J. The Sponges of the Leyden Museum, i. The 
Family of the Desmacidince. Notes Leyd. Mus. ii. p. 99. 
A provisional descriptive revision of the genera and species of this 
family as limited by Schmidt in 1870, with the addition of Clathria. A 
set of symbols is introduced to represent the various modifications of the 
spicular forms, and is employed in the descriptions. 
A. Hyatt. Guides for Science-teaching. No. III. Commercial and 
other Sponges. Boston, U. S. : 1879, 18mo. A short account, in 43 pp., 
of the chief points in the anatomy, physiology, and distribution of 
Sponges, accompanied by 27 semi-diagrammatic figures, illustrating the 
structure, &c. 
A. E. Verrill. Notice of Recent Additions to the ' M.^nnQ Invertehrata 
of the North-eastern coast of America, with descriptions of new genera 
and species, and critical remarks on others. P. U. S. Nat. Mus. ii. p. 165, 
pt. i. Cladorrhiza, grandis, sp. n., is the only sponge mentioned. 
Classifications. 
CzERNiAVSKY (2) arranges the Sponges described by him under the 
divisions — 
