ZOOLOGY: KOFOID AND SWEZY 
11 
(fig. 4). As the daughter nuclei round up they become free from the para- 
desmose which still connects the two daughter blepharoplasts (fig. 4). Later 
the paradesmose loses its staining reactions and fades out or is absorbed, 
either by the cytoplasm or by the centroblepharoplasts. This is followed by 
division of the body and separation of the two daughter flagellates. 
A comparison of various points of this process with certain ones in Tri- 
chomonas reveals a striking similarity in the two types. In the latter the 
Figs. 1-5. Trichonympha campanula Kofoid and Swezy, 1. Anterior portion of tropho- 
zoite showing three groups of flagella, centroblepharoplast, myonemes and uncleus. >^ 225. 
2. Late prophase of division. Ectoplasmic structures and flagella divided; paradesmose 
connecting the centroblepharoplasts; 26 split chromosomes. X225. 3. Metaphase of 
nucleus, X 600. 4. Telophase. Centroblepharoplasts still connected by paradesmose. 
X 600. 5. Mitosis completed, cytoplasmic division approaching. X 225. 
division of the centroblepharoplast also produces a connecting paradesmose 
(fig. 7, par.). Attached to each new centrosome or centroblepharoplast are 
the motor organelles, which are produced partly by division of the old struc- 
tures and partly by new outgrowths. The condition here is similar to that 
in Trichonympha (fig. 2). A precocious splitting of the chromosomes pro- 
duces ten moieties which become reunited at the time of spindle formation, 
giving five as the number of chromosomes going to each daughter cell. The 
same process also occurs in Trichonympha. 
