OXNERELLA MARITIMA. 
537 
Sassaki, C. (1894). — “ Untersuch ungen fiber Gymnosphaera albida, 
eine neue marine Heliozoe,” ‘ Jena. Zeitschr., vol. xvviii, p. 45. 
Schaudinn, F. (1896). — “ Heliozoa,” in ‘ Das Tierreich ’ (Berlin). 
(1896a). — “Ueber das Zentralkorn der Heliozoen, ein Beitrag 
zur Centrosomenfrage,” ‘Yerhandl. deutsch. zool. Ges.’ (Bonn), 
p. 113. 
Scliulze, F. E. (1874). — “ Rhizopodenstudien II,” ‘ Arch. mik. Anat.,’ 
vol. x, p. 377. 
Yejdovsky, F., and Mrazek, A. (1903 ). — ■* Umbildung des Cytoplasma 
wahrend der Befruchtung nnd Zelltheilung,’, ibid., vol. lxii, 
p. 431. 
Watase, S. (1894). — “Origin of the Centrosome,” ‘Biol. Lect., Wood’s 
Holl.’ 
Zuelzer, M. (1909). — “ Bau und Entwicklung von Wagnerella 
borealis, Mereschk.,’ ‘Arch. f. Protistenk.,’ vol, xvii, p. 135. 
EXPLANATION OF PLATE 27, 
Illustrating Mr. Clifford Dobell’s paper on “Oxnerella 
maritima, nov. gen., nov. spec., a New Heliozoon, and 
Its Method of Division ; with Some Remarks on the 
Centroplast of the Heliozoa.” 
[All figures depict Oxnerella maritima, n. g., n. sp., and are 
drawn to the same magnification, 'which is approximately 1500 
diameters. Except Fig. 1, all are drawn from whole specimens fixed 
in Bouin’s fluid and stained with alcoholic iron-alum-haematein. They 
were drawn under a Leitz 2 mm. apochromatic objective (N.A. = 1‘40), 
with compensating oculars, using a Leitz achromatic condenser (N.A. 
— 1’40) with critical illumination.] 
PLATE 27. 
Fig. 1. — Living organism, slightly compressed to show internal 
structure. (The rounded masses in the cytoplasm in this and following 
figures are ingested swarm-spores of green algae, in various stages of 
digestion.) 
Fig. 2. — Similar specimen, fixed and stained. 
Figs. 3-6. — Central region in different individuals, showing various 
appearances presented by the centroplast. 
VOL. 62, PART 4. NEW SERIES. 
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