EEPORT ON THE OPHIUROIDEA. 341 



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

 „ 12. „ „ above, ^^. 



„ 13. ,, „ arm spines, \*. 



,, 14. ,, „ spines from tip of the arm, \'*. 



,, 15. acacia, Lym., below, ^~^. 



16. „ „ above, ^^. 



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



,, 18. Ophiohyrsa rudis, Lym., below, f. 



19. ,, „ above, f. 



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



PLATE XVIL 



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



,, 2. ,, „ above (the scaling should l:)e more distinct), f. 



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



,, 4. ,, p)atula, Lpn. l:)elow, 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, \2. 



,, 9. „ „ arm joints in profile, ^^. 



,. 10. ,, duplicata (var.), Lym., below, ^/. 



„ 11. „ „ above, V=. 



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



slender), l*. 



,, 13. ,, cernua, Lym., below, ^j-^. 



„ 14. „ „ above, \^. 



,, 15. ,, ,, arm joints in profile, \2_ 



,, 16. ,, verrilU, Lym., l>elow (the disk scales should be more distinct), ^j-. 



„ 17. „ „ above, L^. 



„ 18. ,, ,, arm joints in profile (the spines are too slender), ^j2. 



PLATE XVIII. 



Fio-. 1. Amphiura rjJauca, Lym., below, '^^. 

 „ 2. „ „ above, ^2. 



„ 3. „ „ arm joints in profile, L2_ 



(ZOOL. CHALL. EXP. — PART XIV. — 18S2.) 44 



