onthe Organic Composition of Chalk and Chalk Marl. 453 



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. '■ 



Calcarcoiis-shellcd Polythalamia. 



Globigerina biilloidcs J. , 



helicina .... 



Rosalina globulaiis . 



Living. Fossil, 



the Adriatic Sea and 1 ,,, ^ ,^ 

 e Ocean | W. C. Denmark. 



W. C. Cattolica. 



W. C. Gravesend. 



4. Planulina (Synon. "1 ^ .i c /^ u i.r /-, ^ 



Rotalia) ocellata . . / ^°''''' ^'^^^ "^^'' Cuxhaven W. C. Cattolica. 



f W. C. in Russia, Poland, 

 Prussia, Denmark, 



5. Rotalia slobulosa . . -i J^."g'^'"J' F™"« ^"d 



bicily; and C. IM. in 



Greece, Zante, Sicily 

 and Oran. 

 ' W. C. Cattolica. 

 "L C. M. Caltasinetta. 



(Synon. Planu- 1 



lina?) turgida . . . J 



8. Tcxtilaria aciculata 



•{■ 



,and 



Adriatic and the Ocean 



9. ^^ globulosa 



North Sea. 



ActinocNclus q 

 rius . . 



Siliceous-shelled Infusoria. 



uina- /North Sea, Tjiirn Isle in \ 

 • . . L the Cattegat J 



W. C. England, France, 

 Prussia, Denmark. 

 I C. M. Oran. 

 [ C. C. Egypt and Arabia. 

 rW. C. Prussia, Den- 

 mark, England and 

 Sicily. 

 C. M. Greece. 

 [C. C. Egypt and Arabia, 

 f W. C. of all European 

 countries, from Wolsk 

 to Ireland. 

 C. M. Sicily, Oran, and 



Greece. 

 C. C. Egypt and Arabia. 



C. M. Caltasinetta. 



. North Sea, Tjorn . . . . J <^- ^^- O-'an and Caltasi- 

 ■' X netta. 



r North Sea, Cuxhaven, f C. M. Oran, Caltasinet- 

 ■\ Christiania, Tjiirn . . .\ ta, and Greece. 



. North Sea in tlie Cattegat/ ^- ^^- Oran, CaltasineU 

 \ ta, and Zante. 



J C. M. Oran and Caltasi- 



\ nctta. 



. N.Sea,CattcgatncarTjorn. C. M. Oran. 



• C. U. Oran. 



• I and Bay of Christiania'. } ^- ^^- O''''" ""'^ ^a"'<^- 

 bisenarius .... Cattegat near 'Ijilrn ... c. M. Oran. 



quindenarius . . __ . . . c! m'. Oran! 



Amphitetras antcdilu- 1 

 viana f ' • • • C. M. Oran and Greece 



- biternarius 



- senarius . 



- septenarius 



■ octonarius 



nonarius . 



■ denarius . 



undenarius 



