1907.] OF THE THIRD TANGANYIKA EXPEDITION. 257 



2. Du-Plessis-Gouret, Dr. G. — Essai snr la faune profonde des 



lacs de la Suisse. Mem. Soc. Helvetique d. Sc. Nat., 

 vol. xxix. Bryozoaixes. Geneve, 1885. 



3. Forel, Dr. F. A. — Faune profonde des lacs Suisses. Mem. 



Soc. Helvetique d. Sc. Nat., vol. xxix. Bryozoaires. 

 Geneve, 1885. 



4. . Le Lenmn. Lausanne, 1904, vol. iii. pp. 113-114, 300. 



5. Kent, W. S. — On a new Polyzoon, VictoreUa jiavida, from the 



Victoria Docks. Quart. Journ. Micr. Sc. new ser. vol. x. 

 1870, pp. 34-39, 1 plate. 



6. Kraepelin, Prof. Dr. Karl. — Die Deutsclien SUsswasser- 



Bryozoen. Hamburg, 1887. 



7. Meissner, M. — Moosthiere. Deutsch-Ost-Afrika, Band iv. 



1895. 



8. . Beitrag zur Kenntnis der geogr. "Verbreitung der 



Bryozoengattung Plumatella in Afrika. Zool. Anz. no. 430, 

 1893. 



9. . Weiterer Beitrag zur Kenntnis der geogr. Verbreit- 



img der Siisswassergattuns; Plimiatella. Zool. Anz. no. 531 , 

 1897. 



10. Moore, J. E. S.— The Tanganyika Problem. London, 1903. 



Arachnoidia, p. 295. 



11. PoTTS, Edward. — On Pahcdicella erecta. Proc. Ac. Nat. Sc. 



Philadelphia, vol. ii. 1884, pp. 213-14. Reproduced also in 

 Ann. Mag. Nat. Hist. ser. 5, vol. xiv. 1884, pp. 437-439. 



12. RoussELET, Chas. F. — On a new Freshwater Polyzoon from 



Rhodesia (Lophopodellci thomasi). Journ, Quekett Micr. 

 Club, ser. 2, vol. ix., April 1904, pp. 45-56. 



13. Wesenberg-Lund, Dr. C. — Biologiske Studier over Fersk- 



vandsbryozoer. Kj^benhavn, 1896, 4 plates. Resume en 

 fraiKjais. 



EXPLANATION OF THE PLATES. 



Plate XIV. 



Fig. 1. Phiniatella tanganyikm (p. 252). Portion of interlacing tubes. X 15. 



2. Flmnatella tanganyikce. Flat under surface of tubes detached from shell, 



showing- septa. X Jo. 



3. Plumatella tanganyikce. Sessile statoblast, upper surface. X 50. 



4. Plumatella tanganyikce. The same, under surface. X 50. 



5. Arachnoidia ray-lankesteri {p. 255). Colony growing on shell. X 20. 



6. Arachnoidia ray-lankesteri. Single cell and polj^pide. X 60. 



Plate XV. 



Fig. 7. VictoreUa symbiotica (p. 255). Piece of sponge with polypides protruding 

 on surface. X 20. 



8. VictoreUa symbiotica. Cells and stolon separated from sponge. X 20. 



9. Fredericella cunningtoni (p. 254). Interlacing tubes adhering to shell 



surface. X 15. 

 10. Fredericella cunningtoni. Portion of same with protruding polypide. 

 X 56. 



