REPORT ON THE OPHIUROIDEA. 



345 



PLATE XXIV. 



11. 



12. 

 13. 

 14. 

 15. 

 16. 

 17. 

 18. 



Opliioscolcx tropicus, Lym., below, f . 

 „ „ above, f. 



,, ,, arm joints in profile, f . 



,, dentatus, Lym., below, f. 



„ above, f. 



,, ,, arm joints in profile, ^. 



Opliioplinthus medusa, Lym., below, ^. 

 „ above, f-. 



„ ,, arm joints in profile, f . 



„ grisea, Lym., below, f- (The division of the mouth is a fracture 



and not constant.) 

 ,, „ above f . (The originals of 0. medusa and 0. grisea, 



were covered with a thick skin, but were partially 

 di'ied to exhibit the plates.) 

 ,, „ arm joints in profile, ^. 



Opliiocliiton fastigatus, Lym., below, f. 



above, f. 

 „ ,, arm joints in profile, f . 



Ophiernus vallincola, Lym., below, -f-. 

 „ above, f. 



,, „ arm joints in profile, f . 



PLATE XXV. 



