38 



THE PROTOZOA 



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FIG. 19. Clathndina elegans, a Heliozoon with a lattice-like skeleton, attached by 

 a stalk. Two individuals are seen, the younger with its stalk attached to the 

 head of the older ; in the younger the lattice-work is still very delicate. Both 

 individuals are sending out numerous radiating pseudopod'ia, very delicate 

 and slender. After Leidy, magnified 750 diameters. 



