PLATE LIV. 



Figs. 1-4. Antedon accela, n. sp. 



Diam, Page 

 Fig. 1. Ventral aspect of a portion of an arm from its lower third, . x 7 83 



Fig. 2. Side view of one of the genital pinnules, . . . x 10 83 



Fig. 3. The ventral surface of another genital pinnule, . . x 10 83 



Fig. 4. The ambulacral skeleton of a later pinnule with the covering 



plates closed down, . . . . . x 20 83 



Fig. 5. Antedon anCtUSTICAlyx, n. sp. 

 Fig. 5. The ventral aspect of an ungrooved genital pinnule, . . x 13 83 



Figs. 6, 7. Antedon incerta, n. sp. 



Fig. 6. Side view of a genital pinnule with its ambulacrum, . . x 13 83 



Fig. 7. The ambulacral skeleton of an arm and the lower parts of the 



pinnules, . . . . . . . x 10 83 



Fig. 8. Antedon in^qualis, n. sp. 

 Fig. 8. The ambulacral skeleton of a pinnule ; from the side, . . x 20 83 



Fig. 9. Antedon basicurva., n. sp. 



Fig. 9. Side view of the ambulacral skeleton of a pinnule mounted in 



dammar, . . . . . . . x 30 83 



Figs. 10, 11. Actinometra strota, n. sp. 



Fig. 10. The peristome of a dry disk, with the origins of the ambu- 

 lacra, . . . . . . . X 3 85 



Fig. 11. Vertical section of an ambulacrum of a dry disk, . . x 12 85 



