166 ELECTRON-MICROSCOPIC STRUCTURE OF PROTOZOA 



Plate XVIII 



Fig. 67. Oblique section of Opalina ranarum. Plane of section 

 passes through bases of longitudinal pellicular folds and into cortex 

 of cell. Row of cross-sectioned flagella at right. Row of kineto- 

 somes at center. Arrows indicate fibrillar strands attached to bases 

 of kinetosomes. X 37,500. From Noirot-Timothee, 1959. 



Fig. 68. Section through endoplasm of Opalina ranarum, showing 



mitochondria (right and lower left) and cloud of fine vesicles. 



X 25,000. From Noirot-Timothee, 1959. 



