[ACTINOZOA. 



RHIZOPODA. 



Fig. 9. Rotalia palffioceras ? Nonionina. 



10. Dexiospira triarchsea ? Globigerina. 



11. ,, hexarchaea 



12. Aristerospira octrachaea 



13. Nonionina archetypus '/ 



14. Spirocerium priscum ? 



? Rotalina. 

 ? Rotalina, 



Ehrenberg's Lower- Silurian Foraminifera, 1858= 



Fig. 1. Vaginulina? ? Eozoon. 



2. Nodosaria ? 



3. Textularia initialis ? 



4. Polymorphina Abaira ? Bulimina. 



5. ,, avia ? Bulimina. 



6. Guttulina Silurica ? Bulimina. 



7,8. Rotalia palaeotrias ? Globigerina. 



There is not one of the above determinations that can be definitely accepted. Some of the grains are possibly parts of Eozoon. 

 They can only be spoken of as Textulariform, Rotaline, and such like ; but of course Prof. Ehrenberg's names can be put in a 

 catalogue as being really Foraminifera. Prof. T. Rupert Jones. 



Monatsbericht der Kon. Preuss. Akad. der Wissens., p. 445, 1861. Prof. Ehrenberg finds, near St. Peters- 

 burg, in the Lower-Silurian clayey green sandstone, the following Infusoria : 



Panderella silurica. 

 depressa. 

 lobata. 



Panderella crepusculum. 



Cymbulia ? brachiospira. 



vetustissima. 



Tiedemannia ? antiquissima. 

 ? silurica. 

 ? lunata. 



Criseis ? falx. 



? hemicyclus. 



ZOOPHYTES. 



SUBKINGDOM C(ELENTERATA=2bop%to, Lwn.=Anthozoa, Ehrenb. CLASS ACTINOZOA. SUBCLASS 

 COBALLAPJA, ~EAw.=Actinoidea, Dana. OEBEES ZOANTHAEIA EUGOSA, Z. TABFLATA. 



