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



PLATE XXVI. 



Fig. 1. Ophiacantha discoidea, Lym., below, f. 



2. „ „ above, f 



„ 3. ,, „ • arm joints in profile, j 



,, 4. ,, ahnormis, Lym., below, f. 



5. „ „ above, f 



,, 6. ,, ,, arm joint in profile, ^. 



,, 7. ,, valenciennesi, Lym., below, f. 



8. „ „ above, f-. 



,, 9. Ophiomitra normani, Lym., below, f. 

 „ 10. „ „ above, f. 



,,11. „ „ arm joint in profile, f^. 



,, 12. Ophiothrix ccEspitosa, Lym., Ijelow, f. 

 ,, 13. „ „ above, f. 



,, 14. ,, ,, arm joint in profile. 



PLATE XXVIL 



Fig. 1. Ophiocymhium cavernosum, Lym., below, f . (The mouth angle is not correct : 



there should be a close line of three mouth 

 papillfe on each side, and a large tentacle 

 socket within the side mouth shield.) 



,, 2. ,-, ,, above, f. (The upper arm plates are too 



large and long.) 



,, 3. „ ,, arm joints in profile, f. (These are cbawn 



upside down.) 



,, 4. Ophlactis p)ectorale,'Ljxa.,\)(i\o\^, \. 

 5. „ „ above, f. 



,, G. „ ,, arm joint in profile, f-. 



,, 7. Ophiopeza cequaUs, Lym., below, f . 



,, 8. ,, „ above, f. (The granulation is too spaced.) 



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



,, 10. Ophiamhix aculeatus, Lym., below, ^^. (The side mouth shields should be 



narrower at their outer ends.) 



» 11- „ „ above, '^^. 



„ 12. ,, „ arm joint in profile, ^^. 



