269 



observations, in two cases at least, there is positive evidence that 

 the extra-nuclear centres originate in the nucleus (Acanthocystis, 

 Oxyrrhis}. 



H 



Fig. 142. Paramceba eilhardi Schaud. [SCHAUDINN.] 



A. Section. B. Sporulation. C-H. The flagellated swarm-spores in process of division, k, 

 the Nebenkdrper ; n, the nucleus which wraps itself around the division-centre {Nebenkdrper). 



In Paramceba, although the division-centre (Nebenkdrper) appar- 

 ently plays no part in the nuclear division of the mother-animal, its 

 daughter-parts play the same role in division of the swarm-spores as 



