PLATE XV. 



Page 

 Figs. 1, 2. Plutonaster marginatus, n. sp. . . . 88 



Fig. 1. A portion of the abactinal surface ; magnified 30 diameters. 



Fig. 2. Adambulacral and infero-'marginal plates ; magnified 9 diameters. 



[For macroscopic figures of this species see PL XIV. figs. 1,2.] 



Figs. 3, 4. Plutonaster rigidus, n. sp. . . . . 91 

 Fig. 3. A portion of the abactinal surface ; magnified 18 diameters. 

 Fig. 4. Adambulacral and iufero-marginal plates ; magnified 8 diameters. 



[For macroscopic figures of this species see PI. XIV. figs. 3, 4.] 



Figs. 5, 6. Plutonaster notatus, n. sp. . . . 97 



Fig. 5. A portion of the abactinal surface ; magnified 25 diameters. 

 Fig. 6. Adambulacral and infero-marginal plates ; magnified 16 diameters. 



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



Figs. 7-11. Phoxaster pumilus, n. sp. ... 236 



Fig. 7. A portion of the abactinal surface of a young example ; magnified 30 

 diameters. 



Fig. 8. Adambulacral and infero-marginal plates of a young example; magnified 

 25 diameters. 



Fig. 9. A portion of the abactinal surface of an adult example; magnified 25 

 diameters. 



Fig. 10. Adambulacral and infero-marginal plates of an adult example ; magni- 

 fied 20 diameters. 



Fig. 11. Mouth-plates and armature ; magnified 12 diameters. 



[For macroscopic figures of this species see PI. XL. figs. 3-6.] 



