PLATE 3 



EXPLANATION OF FIGURES 



39 Sketch of living animal sliowiiig nu(;lous, contractile vacuole, tentacles 

 and cilia. Dorsal view. 



40 Drawing of section tlnough the mouth region to show the longitudinal 

 folds of the gullet; a partially digested Halteria in a flood vacuole and three 

 fragments of the nucleus. X 415. 



41 Sketch from living animal. The periphery of the cell drawn under oil 

 immersion lens; to show peripheral vacuoles, cilia, tentacles, cuticle, cortex, 

 endoplasm and refractive bodies. X 787. 



42 Sketch of section following the one represented in figure 40. X 415. 



43 Sketch of living cell to show four greatly elongated tentacles. 



44 Drawing of same individual swinnning and dragging a long trail of de- 

 tached tentacles. 



45 and 10 Degeneration stages of the same individual. 



404 



