Fias. 
PLATE LIX. 
1-3. Amoeba vespertilio Penard. (p. 10) Active indi- 
viduals. x 400. 
4. A. alba Greeff. (p.11) Active individual. x 150. 
+5. Arcella vulgaris var. hemispharica (Perty) Wailes. 
(p. 18) View of empty test as seen in section. 
x 750. : 
6-9. Pyxidicula invisitata Averintzeff. (p. 22) Fig. 6.— 
View of living individual seen from above. f., 
bifureated margin of test. p.v., pulsating vesicle. 
Fig. 7.—Sectiona] view of empty test. Figs. 8 
and 9.—Different forma of the marginal flange. 
x 1000. After Brown. 
10-14. Capsellina timida Brown. (p. 29) Fig. 10.—Active 
individual. x 700. Fig. 11.—Living individual. 
x 700. Fig. 12.—Enlarged view of oral extremity, 
x 1000. Fig. 13.—Individual with lips of aperture 
open. x 3950. Vig. 14.—Hncysted individual. 
x 500. After Brown. 
