88 
V. //. Blackman . 
LIST OF REFERENCES. 
1 . 
2 
3. 
4. 
5. 
6 . 
7. 
8 . 
9. 
10 . 
Biitschli, O. 
Cleve, P. T. 
yy y > 
Haeckel, E. 
Kent, Saville 
Murray, J. 
yy 
Schiitt, F. 
yy yy 
Protozoa in Bronn’s Klassen, etc., Bd. I., Abt. 
2, 1885, p. 1062 and p. 1088-1095. 
Notes on Atlantic Plankton organisms, K. 
Vetensk. Akad Handl, vol. 39, No 1, 
1900, p. 19. 
The seasonal distribution of Atlantic Plankton 
Organisms. Goteberg, 1901, p. 360. 
Systematische Phylogenie der Protisten u. 
Pflanzen, 1894, Teil I, p. 109. 
A Manual of the Infusoria, London, vol. 1, 
1880, p. 399. 
Proc. Roy. Soc., Lond., vol. 24, 1876, 
p. 533. 
“Challenger” Reports, Vol. I., Pt. 2, 1885 
p.p. 935-938. 
Das Pflanzenleben der Hochsee. Kiel u. 
Leipzig, 1893, p. 38. 
Die Peridineen der Plankton Expedition. 
Teil I. Kiel u. Leipzig, 1895, fig. 80. 
Die natiirlichen Pflanzenfamilien Teil I., Abt. 
Ib., 1896, p. 3. 
DESCRIPTION OP PLATE IV. 
Figs 1-5. —Pyvocystis pseitdonoctiluca, Wyv. Thoms. 
Fig. 1.—A normal uncontracted specimen, after the action of osinic 
acid, x 180. 
/ 
F'ig. 2.—A similar specimen, but slightly contracted, x 170. 
Fig. 3.—A stage of division of the cell, x 145. 
F'ig. 4.—Section through central mass of protoplasm showing elongated 
nucleus; the deeply staining granules are of uncertain nature, 
X580. 
Fig. 5.— P. hamulus Cleve, x 210. 
l'ig. 6.—Another specimen, x 380 
F'ig. 7.—Central portion of P. hamulus showing a collection of “ amylum ” 
bodies. 
F'ig. 8.— P. lunula Schiitt; showing large “amylum ’’ bodies; the dark 
masses are protoplasm blackened by the action of osinic acid, 
x 820. 
Fig. 9.— P. fusifovmis Wyv. Thoms., a slightly contracted specimen, X90. 
F'ig. 10.—Central portion of same specimen showing the nucleus, oil 
bodies and reticulate arrangement of protoplasm, x 380. 
