PLATE IV. 



Page 

 Figs. 1, 2. Pararchaster spinosissimus, n. sp. . . . 12 



Fig. 1. AdarabuLicral and infero-marginal plates; maguified 10 diameters. 



Fig. 2. A portion of the abactinal surface, showing the armature of the abactinal 

 plates, and the papulae; magnified 15 diameters. 



[For macroscopic figures of this species see PI. I. figs. 1, 2.] 



Figs. 3, 4. Pararchaster pedicifer, n. sp. . . . 15 



Fig. 3. Adambulacral and infero-marginal plates; magnified 5 diameters. 

 Fig. 4. A portion of the abactinal surface ; maguified 15 diameters. 



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



Figs. 5, 6. Pararchaster armatus, n. sp. . . . 10 



Fig. 5. Adambulacral and infero-marginal plates; magnified 15 diameters. 



Fig. 6. A portion of the abactinal surface, showing the spinelets on the abactinal 

 plates, and the papula? ; magnified 20 diameters. 



[For macroscopic figures of this species see PI. I. figs. 5, 6.] 



Figs. 7, 8. Pararchaster semisquamatus, n. sp. . . . 7 



Fig. 7. Adambulacral and infero-marginal plates ; magnified 5 diameters. 

 Fig. 8. A portion of the abactiual surface; magnified 10 diameters. 



[For macroscopic figures of this species see PI. II. figs. 1, 2.] 



Figs. 9, 10. Dytaster exilis, n. sp 65 



Fig. 9. Adambulacral aud infero-marginal plates; magnified 15 diameters. 

 Fig. 10. A portion of the abactinal surface ; magnified 30 diameters. 



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



Figs. 11, 12. Dytaster spinosus, n. sp. ... 63 



Fig. 11. Adambulacral and infero-marginal plates; magnified 5 diameters. 

 Fig. 12. A portion of the abactinal surface; magnified 15 diameters. 



[For macroscopic figures of this species see PI. V. figs. 1, 2.] 



