PLATE XXXIX. 



PAGE 



Figs. 1-9. Hyalonema sp., . . . 232 



Fig. 1. Marginal oxydiact with four cruciately disposed knobs ; x 300. 



Figs. 2, 3. Great amphidiscs with spinous axial beam ; x 300. 



Fig. 4. Middle-sized amphidisc ; x 300. 



Fig. 5. Autodermal pentact pinulus ; x 300. 



Fig. 6. Oxyhexact with straight smooth rays ; x 300. 



Fig. 7. Autodermal pentact pinulus ; x 300. 



Fig. 8. Small amphidisc ; x 300. 



Fig. 9. Middle-sized amphidisc ; x 300. ' 



Figs. 10-15. Hyalonema s]^., neav Hyalonema conus, F. E. S., . 233 



Fig. 10. Great amphidisc with broad paddle-shaped umbel rays; x 300. 



Fig. 11. Middle-sized amphidisc ; x 300. 



Fig. 12. Oxyhexact with straight smooth rays ; x 300. 



Fig. 13. Autodermal pentact pinulus; x 300. 



Fig. 14. Small amphidisc ; x 300. 



Fig. 15. Autodermal pentact pinulus ; x 300. 



Figs. 16-18. Hyalonema (probably) lusitanicum, Bocage, . 225 



Fig. 16. Basal tuft with Pa/^f/wa-investment, torn from the body; natural .size. 



Fig. 17. Tetract with rough ends, from the basal pad-rest of the superior end of 

 the tuft ; X 300. 



Fig. 18. Echinated and rough thick diact, from the basal pad -rest of the superior 

 end of the tuft ; x 300. 



