SPECIAL MORPHOLOGY OF THE PROTOZOAN NUCLEUS 269 



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

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

 Oxyrrhis}. 



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



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

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



In Paramceba, although the division-centre ^Nebenkorper} 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 



