PEOTOZOA. 23 



■when it is said to bo "encysted " (fig. 4, c). Tlie nucleus tlien disappears, and 

 the sarcode of tlie body brealis up into little masses, which are at first rounded, 

 but afterwards become pointed at both ends, when they are called ' ' pseudo- 

 navicellie" {fig. 4, d). The cyst then breaks and the pseudonavicellfe escape, 

 when they give origin to little masses of sarcode, which have the power of 

 active movement and of throwing out pseudopodia, thus coming closely to 

 resemble the animalcule which will be directly described as the Amosha (fig. 4, 

 g and h). These little amoeba-like masses, if they find a suitable locality, 

 are finally developed into new Girr/arintc. 



