PLATE XLVIII. 



PAGE 



Poliopogon gigas, F. E. S., . , 257 



Fig. 1. Vertical section of a portion, preserved in alcohol (combination fioure) ■ 

 X 60. "^ ' 



Fig. 2. Large amphidisc ; x 300. 



Figs. 3, 7. Small smooth oxydiact ; x 300. 



Figs. 4, 6. Small amphidiscs ; x 300. 



Fig. 5. Autodermal pentact pinulus ; x 300. 



Fig. 8. Autodermal hexact pinulus ; x 300. 



Fig. 9. Outer view of an autodermal pentact pinulus ; x 300. 



Fig. 10. Oxyhexact with straight echinated rays ; x 300. 



Fig. 11. Autodermal hexact pinulus ; x 300. 



Fig. 12. Hexact with five pointed and one rounded smooth rays ; x 300. 



Fig. 13. Inferior part of an abnormal anchor-like spicule of the basal tuft ; x 100. 



Fig. 14«. Liferior, and Fig. 14& superior, part of a normal anchor-like spicule of 

 the basal tuft; x 100. 



