ORDER: RADIOLARIA 



CK 



167 



„, /^vV/iV|||fi|i,,||\.\^.^\vxv^ p 





Fig. 77. — Thalassicola x>elagica : An Inhabitant of the Ocean Surface Waters 

 ( X 25). (From Gamble's Article in Lankester's Treatise on Zoology, 1909.) 



CK, Central caj^sule; EP, extracai^sular cytoplasm; al, carbonic acid filled vacuoles (alveoli); 

 2>s., ji.seudopodia. 



^S, 



f 





I 



I 



Fu;. 78. — Aeanthometra elastica ( x ea. 150). (From Minchin's Protozoa, 1912.) 



'<}) , Radiating spines; ps., pseudopodia; c, calymma; ex., central capsule; N., nuclei; x, yellow 

 cells; 7111/., myophrisks (rod-like bodies). 



