REPORT ON THE OPHIUROIDEA. 341 



Fig. 11. Amphiura constricta, Lym., below, \ 4 . 

 12. „ „ above, *j±. 



„ 13. ,, ,, arm spines, 1 1 4 . 



,, 14. ,, „ spines from tip of the arm, 1 1 *. 



,, 15. acacia, Lym., below, T T °. 



16. „ „ above, ^>. 



,, 17. ,, „ arm joints in profile, \ . 



,, 18. Ophiobyrsa rudis, Lym., below, f. 

 ,, 19. ,. „ above, f. 



,, 20. ,, „ arm joints in profile, f . 



PLATE XVII. 



Fig. 1. Amphiura concolor, Lym. below, f. 



,, 2. ,, ,, above (the scaling should be more distinct), f. 



,,3. ,, ,, arm joints in profile, f. 



,, 4. ,, patula, Lym. below, f , 



,, 5. ,, ,, above (the scaling should be more distinct), f-. 



„ 6. ,, ,, arm joints in profile, f . 



,, 7. ,, canescens, Lym., below (the disk scales should be more distinct), \ 2 . 



„ 8. „ „ above, ^. 



,, 9. ' „ ,, arm joints in profile, l x 2 . 



, ; 10. ,, duplicata (var.), Lym., below, \ 4: . 



„ 11. „ „ above, \±. 



„ 12. ,, ,, arm joints in profile (the spines are too 



slender), J T 4 . 



,,13. „ cernua, Lym., below, 1 T 2 . 



„ 14. „ „ above, L 2 . 



,, 15. ,, ,, arm joints in profile, x ^. 



,, 16. „ verrilli, Lym., lielow (the disk scales should be more distinct), a x 2 . 



„ 17. „ „ above, i r 2 . 



„ 18. ,, ,, arm joints in profile (the spines are too slender), ] 1 2 . 



PLATE XVIII. 



Fig. 1. Amphiura glauca, Lym., below, ] T a . 

 „ 2. „ „ above, \ 2 . 



„ 3. „ „ arm joints in profile, : y 2 . 



(ZOOL. CHALL. EXP. PART XIV. 1882.) 44 



