198 



ASTEROIDEA AND OPHIUROIDEA. 



Terminology of the Ophiuroidea : 

 Arms 

 Body 

 Dermis 

 Maxillae . 

 Oral opening 

 Osseous system 

 Ovaries 

 Spines 

 Tegumentary appendages 



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131, 132, 134—137 

 131, 135, 136 

 131, 135 

 . 136 

 131, 132 

 134—137 

 . 131 

 136, 137 

 134-136 



