'04 



K1DIOLARIA FROM THE UPPER CHALK. [Nov. I9OO, 



Kl 



EXPLANATION OF PLATES XXXVII & XXXVIII. 



[The specimens figured are, with one exception, drawn to the same 

 scale of 200 diameters.] 





Plate XXXVII. 



1. 



Cenosphcera sp. 



Fig. 15. Uncertain. 



2. 



,, gregaria, Eiist. 



16. Cyrtocalpis cf. compacta, 



3. 



Stylosphcera sp. 



Hasckel. 



4. 



Trilonche sp. 



17. Coccodiscus sp. 



5. 



Acanthosphcera sp. a. 



18. Rhopalastrum sp. d. 



6. 



„ sp.0. 



19. _ „ sp. |3. 



7. 



Lithapium sp. 



20. Trigonocyclia sp. a. 



8. 



Uncertain, probably Gyphinus 



21. Ilithocampe sp. 





sp. 



22. Trigonactura armata, sp. nov 



9. 



Theodiscus sp. 



23. Rhopalastrum sp. y. 



10. 



Spongotripus pauper (?) Eiist. 



24. Trigonocyclia, sp. /3. 



11. 



sp. 



25. Cyrtocalpis sp. 



12. 



Trochodiscus sp. 



26. Rhopalastrum sp. a. 



13. 



Uncertain. 



27. Hagiastrum sp. 



14. 



Plate X 



28. Dicolocapsa sp. 

 XXVIII. 





Fig. 1. Stauralastru 

 



ft venustum, sp. nov. 





3. Blctyomitra midticostata, Zittel. 





4. „ fo'ara, sp. nov. 





5. „ sp. a. 





6. „ sp. 0. 





7. „ s 



p. 7. 





8. „ sp. S. 





9. ,, pagoda, sp. nov. 





10. „ r 



egularis, Perner. 





11. „ sp. e. 





12. „ sp. t 





13. Zygostephanu 



s aculeatus (?) Eiist. X 100 diain. 





Discu 



SSION. 



The President, Prof. Sollas, Dr. W. P. Hume, and Mr. G. E. 

 Dibley spoke. 



The Author expressed his thanks to the Society for giving him 

 the opportunity of reading the paper. He said that the fossil 

 radiolaria were mounted in stiff glycerine-jelly, as Canada-balsam 

 rendered them almost invisible. He drew attention to some flints 

 similar to those from which the radiolaria were obtained, and to 

 some fossils from Coulsdon among which, were some specimens of 

 Micraster cor-bovis (Forbes). 



