198 
ASTEROIDEA AND OPHIUROIDEA. 
Terminology of the Ophiuroidea : 
Arms 
Body 
Dermis 
MaxillEE . 
Oral opening 
Osseous system 
Ovaries 
Spines 
Tegumentary appendages 
PAGE 
131, 132, 134—137 
. 131, 135, 136 
131, 135 
. 136 
131, 132 
134—137 
. 131 
136, 137 
134—136 
