354 



TRYPANOSOMA SIMI^ 



[CH. 



nucleus o\'al ; micronucleus small, round, situated about 1-5 

 microns from posterior extremity, placed laterally, protuberant ; 

 undulating membrane marked, thrown into bold folds ; flagel- 

 lum frequently not projecting beyond undulating membrane, 

 sometimes i to 2 microns of the extremity apparently 

 free." 



Fig. 79. Trypanosoma simice. Successive stages in the division shemng the 

 pecuhar manner in wliich the two daugliter trypanosomes seem to " slip " 

 past each other, until they are onlj' joined by their non-flagellate ends. 

 (After Brvice, Harvey, Hamerton, Davev and Ladv Bruce.) 



In the blood of the monkej' these tr^'panosomes swarm in 

 enormous numbers and numerous division forms can be seen, 

 often four or fi^-e in a field. When dividing the trypanosomes 

 appear to slip past one another until they are only joined by 

 their posterior extremities, as shewn in Fig. 79. Multiphcation 

 often takes place so rapidly that the individual trypanosomes 

 have not time to disengage themselves and thus large multi- 



I'lg. So. Trypanosoma simitr. Large multinucleate form. 

 Harvey, Hamerton. Davey and Lady Bruce.) 



(After Bruce, 



