on the Organic Composition of Chalk- and Chalk Marl. 38/ 



the living state has been extended to fifty-seven, namely, of 

 calcareous-shelled Polythalamia nine species, and of siliceous- 

 shelled Infusoria forty-eight species. The following is a list 

 of these species and of the localities in which they occur, both 

 in the living and fossil state. In the fossil localities, W. C. 

 signifies white chalk, C. M. chalk marl, and C. C. compact 

 chalk. 



Calcareous-shelled Polythalamia. 



Living. 



1 r'l u- • u 11 -J r I'l the Adriatic Sea and] ,,, 

 1. Globigerina buUoidcs { ^ r> ^ W. 



[ the Ocean J 



-2. helicina 



fl. Ro^alina globularis . — 



4. Planulina (Synon. "1 », ,, t, i-. u 



Rotalia) ocellata . . | ^°"'' ^^^' "^^^Cuxhaven 



W. 

 W 



Fossil. 



Denmark. 



Cattolica. 

 Gravesend. 



5. Rotalia globulosa 



.-J 



(Synon. Planu- 1 



lina?) turgida ... J 



8. Textilaria aciculata 



globulosa 



W. C. Cattolica. 



f W. C. in Russia, Poland, 

 Prussia, Denmark, 

 England, France and 

 Sicily; and C. M. in 



I Greece, Zante, Sicily 



[ and Oran. 



J W. C. Cattolica. 



[ C. M. Caltasinetta. 



{W. C. England, France, 

 Prussia, Denmark. 

 C. M. Oran. 

 C. C. Egypt and Arabia, 

 rW. C. Prussia, Den- 

 , mark, England and 



'~TT~'~T^~^' \ Sicily- 



Adriatic and the Ocean | ^ ^^ Greece. 



(^ C. C. Egypt and Arabia. 

 rW. C. of all European 

 ' countries, from Wolsk 

 T>.T L P J to Ireland. 



No'th S«* -^ C. M. Sicily, Oran, and 



Greece. 

 C. C. Egypt and Arabia. 



Siliceous-shelled Infusoria. 



10. Actinocyclus qui 

 rius 



na- r North Sea, Tjiirn Isle in "I 

 . . \ the Cattegat J 



C. M. Caltasinetti. 



1 1. biternarius 



12. senarius . 



13. 



14. 



15. nonarius 



16. denarius 



•{ 



septenanus 



octonarius 



XT .u o -r- f C. M. Oran and Caltasi- 



North Sea, Tjorn . . . .| ^^^^^ 



North Sea, Cuxhaven, J C. M. Oran, Caltasinet- 

 Christiania, Tjorn . . . \ ta, and Greece. 



North Sea in the Cattegat/ ^- ^- 0/%"' Caltasinet- 

 ° L t3> ^iid Zante. 



r C. M. Oran and Caltasi- 



\ netta. 

 N.'Sea, Cattegat near Tjorn. C. M. Oran. 



17. 



undenarius 



18. bisenarius . . . . 



19. quindenarius . . 



20. Amphitetras antedilu- 

 viana 



and Bay of Christiania 

 Cattegat near Tjorn 



2 C 2 



— C. M. Oran. 

 ' I C. M. Oran and Zante. 



C. M. Oran. 

 C. M. Oran. 



C. M. Oran and Greece. 



