170 



COMPARATIVE ANATOMY 



Fig. 36. 



Bodo saltans. A , an anchored, and B, a free swimming form showing nucleus, 

 contractile vacuole, and two flagella. C, transverse division of a free 

 swimming form. D, a free-swimming form coming into contact with an 

 anchored form. , conjugation of the individuals in D, with fusion of 

 the nuclei. F, triangular zygote resulting from conjugation. G, zygote 

 bursting and emitting spores from three corners. H, young forms 

 developed from the spores. (Modified from Dallinger and Drysdale.) 



