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Fig. 56— TABLE MANNERS OF SOME CILIATED PROTOZOA 



/4, Spathidium spathula and B, Lionotus fasciola, both eat the same food and were caught in 

 the act of swallowing a Colpidium colpoda. 1 to 6, stages in the act of swallowing a Paramecium 

 caudatum by a smaller ciliate, Didinium nasutum. 7. a section of Didinium showing the internal 

 structure and the seizing organ in the proboscis with which it catches and paralyzes Paramecium. 

 The seizing organ then retracts, drawing the victim in with it (2-4) 



From photomicrographs by the author 

 Magnification, 140 



97 



