FROM THE UPPER GREENSAND. 23 



VI. — List of Species from the Upper Greensand. 



1. OncJtotrochus Carteri, Duncan. 



2. Smilotrochus tuberosus, Ed. and H. 



3. „ Austeni, „ 



4. „ elongatus, Duncan. 



5. „ angulatus, „ ' 



6. Peplosmilia Austeni, Ed. and H. 



7. Cyatliophora monticularia, D'Orbigny. 



8. Favia stricta, Ed. and H. 



9. „ minutissima, Duncan. 



■ 10. Thamnastraa superposita, Michelin. 



11. Micrabacia coronula, Goldfuss, sp. 



VII. — Corals from the Red Chalk of Hunstanton, Norfolk. 



The Red Chalk of Hunstanton contains several forms of Madreporaria. The small 

 fauna has this peculiarity — its species belong to the group of the FungidcB without excep- 

 tion. The specimens are small, usually much worn at the calicular end, and are readily dis- 

 tinguished by their mammiliform appearance and white colour. There are no compound 

 Fungidce in the Red Rock, but only such small simple forms as would now characterise the 

 presence of physical conditions unfavorable for Coral life. The recent simple Fungidm are 

 fomid at all depths. Vast numbers of fossil specimens are to be collected in the 

 Lower Chalk of Gosau, a few exist in the Upper Greensand and in the Neocomian forma- 

 tions. In the existing Coral-fauna no simple Fungidce are found in the West Indian 

 Seas, whilst the Red Sea, Pacific, and Indian Oceans, abound with them. It is probable 

 that pecuhar conditions are necessary for their development.^ 



List of the Species of Corals in the Red Chalk of Hunstanton, 



1. Micrabacia coronula, Goldfuss, sp. 



„ „ variety, major. 



2.. Cychlites ptolymorpha, Goldfuss, sp. 



3. Podoseris mammiliformis, Duncan. 



4. „ elongata, Duncan. 



1 For a notice of the geology of the Red Chalk, see Rev. T. Wiltshire's communication to the Geol. 

 Soc, Feb., 1869, 



