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Plate 6. 



Fig. 1. Bathydorus levis spinosus. From a photograph ; \. 



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2, 



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Autogastral hexact ; x 300. 



3. Farrea occa claviformis. From a photograph ; \. 



4. Staurocalyptus, sp. Irregular discoctaster ; x 300. 



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Paratropal, paratangential rays of prostal pentact; from 

 above ; x 100. 



6. Staurocalyptus, sp. From a photograph ; 4-. 



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7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 



Part of a paratropal ray of prostal pentact ; x 400. 

 Discoctaster with two accessory rays ; x 300. 

 Oxyhexaster ; x 600. 



Discoctaster; centrum and three rays; x 450. 

 Farrea occa claviformis. Uncinate ; the two ends of same spicule • x 450. 



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Gastral clavula 

 Gastral clavula 

 Gastral clavula 



from above ; x 450. 

 lateral view ; x 450. 

 lateral view; x 450. 



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