PROTOZOA. 
BY 
C. F. Luton, Pn.D., F.R.D.A. 
SPONGOZOA. 
1. Bowerbank, J. S. Contributions to a general history of the Spon- 
giadce. Pt. vi. P. Z. S. 1874, pp. 298-305, pis. xlvi. & xlvii. 
2. Carter, H. J. On the Spongozoa of Ilalisarca dujardinii. Ann. N. 
H. (4) xiii. pp. 315 & 316. 
3. — — . On Ilalisarca lohularis^ Schm., off the south coast of Devon, 
with observations on the relationship of the Sponges to the Ascidi- 
ans, and hints for microscopy. L. c. pp. 433-440. 
4. . On the naturo of the sood-Uko body of Spongilla ; on the origin 
or mothor-cell of the spiculre, and on the presence of spermatozoa in 
the SpoTigida. Op. cit xiv. pp. 97-111. 
5. . Descriptions and figures of deep-sea Sponges and their spicules 
from the Atlantic Ocean, dredged up on board H.M.S. “Porcupine,” 
chiefly in 1869 ; with figures and descriptions of some remarkable 
spicules from the Agulhas shoal, and Colon, Panama. L. c. pp. 207- 
221, 245-257, pis. xiii.-xv. 
6. . Development of the marine Sponges from the earliest recog- 
nizable appearance of the ovum to the perfected individual. L. c. 
pp. 321-337, 389-406, pis. xx.-xxii. 
7. . Further instances of the Sponge-spicule in its mother -cell. 
L. c. pp. 456-458, pi. xxi. figs. 26 & 27. 
8. Gray, J. E. On the arrangement of Sponges. Op. cit. xiii. pp. 284- 
290. 
9. Hadlow, II. The Ilyaloncma mirahilis. Tr. A. S. Japan, for 
1872-1873 : 1874, pp.J 10-19. [A general descriptive account.] 
10. Higgin, T. On the structure of the skeleton of Euphctella asper - 
gillum. Ann. N. H. (4) xiii. pp. 44-48, pi. iii. (with an introductory 
note by T. J. Moore). 
