PLATE XCIII. 



Page 



Figs. 1-3. Hymenaster pullatus, n. sp. . . . . 519 



Fig. 1. A portion of the supradorsal membrane; magnified 15 diameters. 



Fig. 2. Mouth-plates ; magnified. 



Fig. 3. Adambulacral plates and adjacent portion of the actinal surface ; magnified 

 8 diameters. 



[For a macroscopic figure of this species see PI. XCII. fig. 1.] 



Figs. 4-6. Hymenaster geometricus, n. sp. . . . 518 



Fig. 4. A portion of the supradorsal membrane; magnified 15 diameters. 



Fig. 5. Mouth-plates ; magnified. 



Fig. 6. Adambulacral plates and adjacent portion of the actinal surface ; magnified 

 5 diameters. 



[For macroscopic figures of this species see PI. XCII. figs. 2, 3.] 



Figs. 7-9. Hymenaster latebrosus, n. sp. . . . 514 



Fig. 7. A portion of the supradorsal membrane ; magnified 15 diameters. 



Fig. 8. Mouth-plates ; magnified. 



Fig. 9. Adambulacral plates and adjacent portion of the actinal surface ; magnified 

 8 diameters. 



[For macroscopic figures of this species see PI. XCII. figs. 4, 5.] 



Figs. 10-12. Hymenaster membranaceus, Wyville Thomson, 521 



Fig. 10. A portion of the supradorsal membrane ; magnified 15 diameters. 



Fig. 11. Mouth-plates; magnified. 



Fig. 12. Adambulacral plates and adjacent portion of the actinal surface ; magnified 

 S diameters. 



[For macroscopic figures of this species see PI. XCII. figs. 6, 7.] 



