PLATE XL. 



PAGE 



Hyalonema (Stylocahjx) globus, F. E. S., . . 221 



Fig. 1. Specimen, preserved in alcoliol, with damaged basal tuft; natural size. 



Fig. 2. Fragment of the outer part, view of the outer side ; x 60. 



Fig. 3. Strand of parenchymal diacts ; x 200. 



Fig. 4, Parenchymal oxydiact wdth central knot ; x 100. 



Fig. 5. Oxydiact with terminal barbs and four central pointed knobs, cruciately 

 disposed ; x 200. 



Fig. 6. Marginal oxydiact with four cruciately disposed central knobs ; x 100. 



Fig. 7. Large amphidisc ; x 100. 



Fio-. 8. Inferior part of an anchor-like spicule of the basal tuft ; x 100. 



Fig. 9. S])icules of the basal tuft ; x 100. 



Fig. 10. Oxyhexact with straight smooth rays ; x 500. 



Figs. 11, 13. Oxyhexasters, which do not belong to Hyalonema (Sfylocalyx) 

 globus, but have intruded from some other form ; x 500. 



Fig. 12. Tetract with echinated ends, from the basal pad ; x 100. 



Fig. 14. Oxyhexact with echinated rays ; x 500. 



Fig. 15. Small amphidiscs ; x 500. 



Fig. 16. Autodermal pentact pinulus ; x 500. 



This plate was arranged by Sir Wyville Thomson. 



For " Dictyosjjhcvra " on the plate read " Hyalonema (Stylocalyx)." 



