334 WOOLFORD B. BAKER. 



border of the reservoir. The mass of the kinetic complex has in 

 the meantime divided and the daughter halves have passed away 

 from each other on the upper margin of the nuclear membrane. 

 The lower border of the reservoir is seen to broaden as the 

 separation of the masses or granules continues, much as if they 

 were the centers of the division process. 



A small lobe is seen to form on each side of the widening 

 reservoir in contact with the nucleus (Fig. 6). As the nucleus 

 elongates the lobes increase in size and eventually become 

 separated in the anaphase (Fig. 10). This separation continues 

 upward along the gullet until two structures are formed from the 

 original one, remaining connected however, at the peripheral 

 opening of the original gullet. In the early telophase the external 

 opening becomes oval shaped and gradually divides. 



No indication has been observed of the disappearance of the old 

 gullet-reservoir and the rebuilding of a new one as Dobell de- 

 scribes for Copromonas. Neither has one daughter animal been 

 seen to take over the old system while the other animal builds a 

 new one, as described by some authors. 



Division of the Body. 



The first indication of the longitudinal split of the body is seen 

 in the region of the reservoir (Fig. 13). The split continues 

 posteriorly along the median plane of the body until the two 

 daughter animals are completely separated. The flagella appear 

 extended from the gullets at an early stage after separation 

 begins, and their movement perhaps aids in the eventual pulling 

 apart of the bodies. Observations of living animals at this stage 

 shows continued twisting and writhing of the anterior ends as 

 separation progresses, until the two bodies are connected by a 

 small strand of protoplasm. Then usually both animals take a 

 position in a straight line with their anterior ends pointing in 

 opposite directions, in which position a veritable tug of war takes 

 place until the bodies are completely separated. Immediately 

 after separation the bodies round up slightly, forming elongated 

 oval shapes and remain more or less quiescent for some minutes. 

 In this quiescent condition the final processes of reorganization 

 seem to occur. 



