344 THE VOYAGE OF H.M.S. CHALLENGER. 



PLATE XXII. 



Fig. 1. Ophiacantha nodosa, Lym., below, 4\ 



2. „ „ above, f. 



,, 3. „ ,, an arm spine, 1 T 2 . 



,, 4. ,, ,, thorny stump from the disk, 2 j°. 



,, 5. Astrotoma murrayi, Lym., below, f. 



6. „ „ above, f. 



,, 7. ,, ,, arm joints in profile, -f-. 



„ 8. Astroschema tumidum, Lyni., below, $-. 



9. „ „ above, f. 



,, 10. „ ,, arm joints in profile near base, f. 



,, 11. ,, ,, arm joints in profile near tip of arm, f. 



,, 12. ,, salix, Lym., below f. (The apparent mouth papillae are too large, 



,, 13. ,, ,, and are only scattered grains ; so also in fig. 8). 



above f . (The granulation is too scattered.) 



,,14. ,, ,, arm joints near base of arm, f. 



,, 15. ,, ,, arm joints near tip of arm, f. 



PLATE XXIII. 



Fig. 1. Ophioconis antarctica, Lym., below, •>-. 



2. „ „ above, f 



„ 3. ,, ,, arm joints in profile, J. 



,, 4. ,, pulveridenta, Lym., below, f-. 



5. „ „ above, f. 



,, 6. ,, ,, arm joint in profile, f. 



,, 7. Pectinura heros, Lym., below, f. 



8. „ „ above, f. 



,, 9. ,, ,, arm joints in profile, -J. 



,, 10. ,, arenosa, Lym., below, [-. 



„ 11. „ „ above, f 



,, 12. ,, ,, arm joint in profile, -\. 



,, 13. Ophiopholis japonica, Lym., below, £. 



„ 14. „ „ above ]-. 



„ 15. „ „ arm joint in profile, f. 



„ 16. Ophiochiton lentus, Lym., below, f. 



„ 17. „ „ above, f. 



„ 18. „ „ arm joint in profile, f. 



