SPUMELLARIA ET NASSELLARIA. TAF. 10. 



Tlie %age of H.M.S ChaDenritr 



Radiolaria l'l 20 



BHaeokel and .WiltsthJleL 



I DRYMOSPHAERA, 2-4. MELITOMMA 



E.!iltsch 1 Jena,Lifho^r 



