PLATE LVIII. 



FIGS. 



1. Amoeba ftuida Gruber. (p. 8) Active individual. 



x 400' 



2. A. vespertilio Penard. (p. 10) Small active indi- 



vidual, x 400. 



3. A. verrucosa var. papyracea Penard. (p. 10) Active 



individual. x 200. 

 4, 5. Arcella arenaria Greeff. (p. 15) Fig. 4. Side view 



of empty test. Fig. 5. View of active individual 



from above. x 500. 

 6, 7. A. polypera Penard. (p. 16) Fig. 6. Side view of 



empty test. Fig. 7. View of active individual 



from above. x 300. 

 8. Capsellina timida Brown, (p. 29) Longitudinal view 



of active individual. x 700. After Brown. 

 9, 10. Bullijiula indica Penard. (p. 45) Fig. 9. Side view 



of test. Fig. 10. Oral view of test, x 200. 

 11-13. Microcoryciaflava(Greeft) Cockerell. (p. 25) Fig. 11. 



Oral view of individual with extended test and 



partially closed aperture. Fig. 12. Side view of 



test showing the membrane by means of which the 



aperture can be closed. Fig. 13. Oral view of test 



partially folded together. x 350. 



