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



PLATE XXXIII. 



Fig. 1. Astrosche7na ruhrum, Lym., below, f. 

 „ 2. „ „ above, f . 



,, 3. ,, „ arm joint near base of arm, ^. 



„ 4. ,, ,, arm joint near tip of arm, ^. 



,, 5. Amphiura incana, Lym., below, f. 



6. „ „ above, f. 



„ 7. ,, ,, side arm plate in profile with spines, f-. 



,, 8. ,, glabra, Lym., below, ^. 



„ 9. „ „ above, «• 



„ 10. ,, „ side arm plate in profile with spines, ij'. 



PLATE XXXIV. 



Fig. 1. Astroceras 2^ergamena, Lym., below, f. The mouth angle is incorrect ; there 



are no mouth papillse, only irregular grains. 

 2. „ „ above, f . 



,, 3. „ ,, arm joint near base of arm, f. 



,,4. ,, „ arm joint midway of arm, f . 



,, 5. ,, ,, arm joint near tip of arm, f . 



„ 6. Astroclon iwopugnatoris, Lym., entii-e animal in profile, \. 



7. „ „ below, 1. 



8. „ „ above, {. 



,, 9. „ ,, arm joint near base of arm, ^. 



,, 10. ,, ,, arm joint beyond first fork, ^. 



,,11. ,, „ arm joint at tip of twig, \o_ 



PLATE XXXV. 



(For further remarks on this plate, see generic descriptions of Astrophyton and Euryale.) 



Figs. 1-16. Euryale aspera, Lmk. 

 ,, 17-25. Astrophyton costosum, Seba. 

 ,, 26. Gorgonocephalus agassizii, Lym. (Marked A. costosum on the plate.) 



Fig. 1. Euryale aspera, Lmk., j-. A mouth angle with skin removed to show the large 

 side mouth shields (h), jaws (c), jaw-plate (e), mouth papilla) (d), and 

 teeth {d"), under arm plate (h), side arm plate {i). 



