PLATE VII. 



Bathyceinus aldrichianus, Wyv. Thorns. 



Fig. 1. All entire specimen, .... 



Fig. 2. The calyx aiicl arms, .... 



Fig. 3. Oblique view of the disk. 



Figs. 4, 4«. Dorsal and ventral aspects of the radial axillaries. 



Figs. 5, 5a. Dorsal and ventral aspects of the second radials. 



Figs. G, Go. Outer and inner faces of tlie first radials, 



Fig. 7. Terminal portions of two pinnules, mounted in dammar 

 and seen in optical section, 



Fig. 8. The lower part of an arm from aljove, 



Fig. 9. Lower stem-joints and root, 



Fig. 10. Middle stem-joints, 



Fig. 11. Upper stem -joints and basals, 



Figs. 12, 13. Terminal faces of lower stem-joints. 



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2 



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Page 

 241 



241 



234 



231 



231 



230 



233 

 233 



28 

 27 



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