tJie Nomenclature of the Foramimfera. 291 



of slightly varying outlines (see pi. xxiii. &c.). Figs. 48 & 

 49, PI. stcula, 1838, seem to comprise a Eotalia? (48) and a 

 PIcmorhclma? (4:9). Figs. 50, PL 'nnc7'om^)hala {?) , and 51, 

 PI. marmorata, are Cristellaria rotxdata. Fig. 52, PI. sjiira^ 

 is probably o, Planorhulina. Fig. 53, Cristellaria'^ Ho ffmanni^ 

 is a beautiful Crist, cultrata^ with flattened form, thicii septa, 

 and very broad keel. 



Fig. 54 are stellate spicules (?). A. Some of the powdered 

 limestone, magnified 300 diams., shows, besides Foraminifera, 

 many Cyatholiths &c. B. Foraminifera without the finer 

 particles. 



This group also belongs to a sea of moderate depth, about 

 50 to 90 fathoms. 



S])ecies and notable Varieties of Foraminifera from the White 

 Limestone of Cattolica^ Sicily, figured hy Ehrenherg. 



1 . Lagena sulcata ( W. & J.) . 



2. elongata [Ehr.). 



3. Glandulina laevigata, Z)' Orb. 



4. Nodosaria gracilis, i)' Orb. 



5. ovicula, 2)' Orb. 



6. Vaginulina laevigata. Poem. 



7. Cristellaria rotulata {Lam.). 



8. cultrata (Montf). 



9. Polymorphina Thouini, D^Orb. 



10. problema, i)' Orb. 



11. Bolivina punctata, Z>' (9ri. 



12. Virgulina Schreibersii, Czjz. 



13. Hemprichii {Ehr.). 



14. stiligera {Ehr.). 



15. paradoxa {Ehr.). 



16. Textilaria sagittula, Defr. 



17. gibbosa, D'OrZ). 



18. Vulvulina apiculata {Ehr.). 



19. Globigerina bulloides, D Orb. 



20. Planorbulina farcta {F. & M.). 



21. — — globulosa {Ehr.). 



22. ammonoidcs {Ess.). 



23. Haidingerii {D'Orb.). 



24. Pulvinulina Menardii {D'Orb.). 



25. Quinqueloculina (young). 



XII. Foraminifera from the Chalk of Meudon, France. 

 (Monatsberichte k. Berliner Akad. Wiss. 1838, p. 192 ; Ab- 

 handlungen, 1838, table vi. pi. 4. fig. v.) 



The next two plates in the ' Mikrogeologie ' are of great 



