34 



deposit on the sea floor known as Atlantic or Globigerina 

 " Ooze " consists largely of the accumulated remains of 

 Globigerina shells. 



The test of Haliphysema is made of sponge spicules, 

 and it is shaped like a wine-glass, the disc-like base serving 

 for attachment. 



CLASS RADIOLARIA. 



What are Radiolarians ? Give an Example. 

 F^Marine naked Protozoa which have thread-like pseudo- 

 podia, and which are specially adapted for pelagic life. 

 The Jbody consists of an inner portion which contains 



FIG. 5. Thalassicolla. (A Radiolarian. ) 



After Haeckel. 



Note they,thread-like pseudopodia, the vacuolated protoplasm, and 

 the central capsule. 



the nucleus or nuclei and is the centre of reproduction* 

 andean outer voluminous mass which is highly specialised 

 and has three distinct parts (1) the innermost, being 

 assimilative and excretory; (2) the outermost, forming 



