PLATE XCIX. 



PAGE 



Dactylocalyx suhglohosus. Gray, . . . 349 



Fig. 1. A dried specimeu ; natural size. 



Fig. 2. Diagrammatic representation, illusti-atiiig my conception of the structure 

 of the framework of narrow tubes, showing a vertical section through 

 the marginal part of the cup-shaped bod}^ ; x 15. 



Fig. 3. Vertical section of the exterior part of the skeleton, with the loose spicules 

 in natural position ; x 50. 



Fig. 4. Dermal pentact with kuol^bed tangential rays ; x iOO. 



Figs. 5, 6. Discohexasters with long terminal rays ; x 450. 



