1762 



THE VOYAGE OF H.M.S. CHALLENGER. 



II. List of Fossil Radiolaria (probably Jurassic) found in the " Diaspri della Toscana," 

 and described in 1880 by Dante Pantanelli (L. N. 36). (Compare 243, 

 Note B, p. clxviii). 



The figures are too small and too incomplete for certain determination. 



I. SPUMELLARIA. 



1. Ethmosphcera minuta. 



2. Ethmosphcera vulgaris. 



3. Eihmosphcera siphonophora. 



4. Heliosphcera echinoidites. 



5. Rhaphidococcus lusianensis. 



6. Heliodiscus simplex. 



7. Histiastrum lusianense. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 



Trematodiscus soritoides. 

 Euchitonia muellerites. 

 Euchitonia amcena. 

 Euchitonia clathrata. 

 Euchitonia crevolensis. 

 Euchitonia grandis. 

 Euchitonia dubia. 



II. NASSELLARIA. 



15. Lithocircus haeckelii. 



16. Lithocircus truncatus. 



1 7. Lithocircus rhombus. 



18. Cornutella pseudoprofunda. 



19. Cornutella pseudoclathrata. 



20. Lithopera ovata. 



21. Lithopera elongata. 



22. Polystichia ehrenbergii. 



23. Polystichia haeckelii. 



24. Polystichia muelleri. 

 2 5 . Urocyrtis emmce. 



26. Urocyrtis amalice. 



27. Urocyrtis stephanii. 



28. Adelocyrtis cometa. 



29. Adelocyrtis pala. 



30. Adelocyrtis spinosa. 



