36 



THE INVERTEBRATA 





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B 



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Fig 32. Radiolaria without skeleton. A, Thalassicolla pelagica, x 20. After 

 Haeckei. B, Collozoum inerme. C, A central capsule of the same, more highly 

 magnified. After Doflein. caL calymma; cps. central capsule; tiu. nucleus; 

 oil. oil globule; ps. pseudopodium ; y.c. "yellow cells" (Zooxanthellae). 



