ecp. enp. 



B /• vac. 



Fig. 55. Entamoeba, x about 2000. After Dobell and O'Connor. A, E. histo- 

 lytica. B, £". to/t. ^.c. ingested red blood corpuscles; ecp. ectoplasm; enp. 

 endoplasm ; f.vac. food vacuole ; kar. karyosome, eccentric in E. coli ; nu. 

 nucleus ; ps. pseudopodium. 



or / 



Fig. 56. Fig. 57. 



Fig. 56. A diagram of the life cycle of Entamoeba histolytica, a-f, Encystment 

 and formation of amoebulae. I-III, Binary fission (in gut of host). 

 Fig. 57. Pelomyxa palustris. Partly after Doflein. f.p. undigested particles 

 swallowed with food ; ^(y. glycogen granules; nu. nuclei (stained). 



