PLATE LXXXVI, 
Figs. 1-3. HYMENASTER VICARIUS, 0. sp, 
1. A portion of the supradorsal membrane ; magnified 15 diameters. 
2. Mouth-plates; magnified. 
3. Adambulacral plates and adjacent portion of the actinal surface ; magnified 
8 diameters. 
[For macroscopic figures of this species see PI]. LXXXIV. figs, 3, 4.] 
Figs. 4-6, HyMENASTER GLAUCUS, 0. sp. 
4. A portion of the supradorsal membrane ; magnified 15 diameters. 
5. Mouth-plates ; magnified. 
6. Adambulacral plates and adjacent portion of the actinal surface ; magnified 
15 diameters. 
[For macroscopic figures of this species see P]. LXXXIV. figs. 1, 2.] 
Figs. 7-9. HyMENASTER SACCULATUS, 2. sp. 
7. A portion of the supradorsal membrane ; magnified 15 diameters. 
8. Mouth-plates ; magnified. 
9. Adambulacral plates and adjacent portion of the actinal surface ; magnified 
8 diameters. 
[For macroscopic figures of this species see P]. LXXXV. figs. 1-3. ] 
Figs. 10-12. HyMENASTER C4 LATUS, 0. sp. 
10. A portion of the supradorsal membrane ; magnified 15 diameters. 
. 11. Mouth-plates; magnified. 
. 12, Adambulacral plates and adjacent portion of the actinal surface; magni- 
fied 8 diameters. 
[For macroscopic figures of this species see P]. LXXXYV. figs. 4, 5.] 
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