T he Voyage ofH .M. S .'Challenger." 



Radiolaria. PL 5. 



EiGiltscT^Jena.Litfrocjr. 



1-4. TRYPANOSPHAERA, 5-9. MAZOSPH AERA, 10. 11, B UCCI NOSPH AER A. 



12. 13. COLLOSPHAERA. 



