STUDIES ON CEYLON HAMATOZOA. 673 
These appearances seem on the surface to show a curious 
amount of variation, but it is easily explained if it is remem- 
bered that at this stage an obvious decrease in the firmness 
of the peripheral protoplasm is taking place; in fact it 
becomes much more soft and viscid. This in correlation with 
the various methods of movement found in the normal try- 
panosome produces all the figures noted above. ‘Thus, for 
Trext-F1iG. 2.—Two different methods of rounding off. 
instance, in text-fig. 1, c and p the Trypanosome has obviously 
been executing the wheel motion when its protoplasm began 
to soften, and fusion occurred, and so on. 
Finally, whatever the method adopted the Trypanosome 
comes to rest, and the flagellum breaks loose from the 
membrane while retaining its attachment at the kineto- 
nucleus. It still lashes about fora time. All trace of the 
myonemeta completely disappear, and the animal appears as 
an irrevular mass of protoplasm (text-fig. 5, 8). Occasionally 
