26 BRITISH F-RESHWATKIt KH1ZOPODA. 



adhering, are of frequent occurrence. Where the tests 

 are sufficiently transparent, a streaming of the proto- 

 plasm may be observed from one shell into the other 

 (e. (/. Euglypha, Gyplioderia}, slow but continuous, until 

 one shell is entirely emptied. The pair will remain 

 attached for a considerable time, and it is presumed 

 that after separation the encistment of the united 

 protoplasm, in the test which contains it, is completed, 

 there to undergo subsequent division and to produce 

 " swarm-spores." 



Vampi/rella is said to reproduce while encisted, by 

 dividing into a number of parts, each of which emerges 

 provided with pseud opodia like those of the parent. It 

 has been observed, however, in the case of V. later itia, 

 that young amoeboid forms escape from the parent and 

 pursue a separate existence, first as amoebula?. These 

 are liable to be mistaken, without careful scrutiny, for 

 actual Amcebse. At the time of, and immediately 

 subsequent to, extrusion, they have sharply-pointed 

 pseudopodia ; but after a while the pseudopodia become 

 blunt, completing the resemblance to some of the 

 smaller forms of Amoeba proteus and even of Dactylo- 

 spherium radiosnm. Their after-development has not 

 been traced with certainty, but it is assumed, no doubt 

 with good reason, that in a short time these off-shoots, 

 or plasma-spores, of the Vampi/rella develop into 

 mature individuals. They are destitute of any flagellum. 



In Pelomyxa, again, spore-formation, divergent in 

 form, but probably not in substance, from the general 

 type, has been noted. This organism is multi-nucleated, 

 the nuclei being small and distributed throughout the 

 plasma-body. An individual was observed by Greeff to 

 liberate a number of amcebulae, which he thought might 

 be its spore-like young. The animal at first seemed as 

 if in the act of breaking up. Around the whole outer 

 margin of the Pelomyxa there came forth an incalcul- 

 able number of minute amcebulas, surrounding the 

 parent body in a thick annularly-arranged crowd. 

 These had all the same habits, movements, and size ; 



