PLATE XXX. 



Pentacrinus naeesianus, n. sp. 



Fig. 1. The calyx and lower parts of tlie arms of au adult individual, 



Fig. 2. The disk, ...... 



Figs. 3, 4. The calyx ; from above and below, . 



Fig. 5. The lower face of a first radial, with one basal remaining 

 attached, ...... 



Figs. 6, 7. An isolated basal from below and above, 



Fig. 8. A first radial, from beneath, .... 



Fig. 9. Distal face of a first radial, .... 



Figs. 10, 11. Proximal and distal faces of a second radial. 



Figs. 12, 1.3. Proximal and distal faces of a third or axillary radial. 



Fig. 14. Dorsal aspect of the axillary with the two first brachials 

 attached, ...... 



Figs. 15, 16. Proximal and distal faces of a first 1)rachial, 



Figs. 17, 18. Proximal and distal faces of a second lirachial. 



Figs. 19, 20. Proximal and distal faces of the hypozygal portion of the 

 third luMchial, ..... 



Figs. 21, 22. Proximal and distal faces of the corresponding epizygal, 



Fig. 23. Portion of an arm containing two syzygies ; side view. 



Fig. 24. The arm-groove and brachial ambulacrum ; from above, 



Fig. 25. Terminal faces of an internodal joint, . 



Figs. 26, 27. Lower and upper faces of a nodal joint, . 



Figs. 28, 29. Lower and upper faces of an infra-nodal joint, 



Fig. 30. The two faces of the next joint lielow an infra-nodal, . 



