ACTINOZOA 



247 



ASTIIJEIDJE : 



JDimorphastrcBa. 

 Pleurocora. 



FUNGID^. 



Micrabacia. 



Anahacia. 



Genahacia. 



Madrepoeidje. 



Actinacis. 



FAVOSITIDiE. 



Koninckia. 



MlLLEPOEID^. 



Poli/tremacls. 

 Staurid^. 

 Holocystis. 



12. Tertiary Corals. — 



The Tertiary formations are abundantly sup- 

 plied with Corals, chiefly belonging to the Ajjo- 

 Tosa and Perforata. The Tabulata are repre- 

 sented by a single genus. There are distinct 

 traces of Alcyonaria, The Sclerobasic Zoan- 

 tharia now first present themselves. Here, too, 

 appear for the first time the Dasviidce and Stylo- 

 phoridw, whose claim to the rank of distinct 

 families is somewhat doubtful. The Dasmidce do 

 not survive the period. The following genera are 

 restricted to the Tertiary deposits : 



TuEBmOLID^. 



Conocyathus. 

 Deltocyathus. 

 Leptocyatkus. 

 Ecmesus. 

 Turbinolia ? 

 Piatytrochus. 

 Ceratotrochus. 

 Discotrochus. 

 Dasmid^. 

 Basmia. 



OCULINED^. 



Di'plohelia. 

 Astrohelia. 

 Stylophoeidje. 

 Aroeacis. 



AsTEiEID-S:. 



Cyclosmilia. 

 Dendrosmilia. 



Haplocoenia. 



Oirco'p'hyllia. 



Tichastr<sa. 



Metastrcea. 



Cryptangia. 



Cladangia. 



FUNGID^. 



Trochoseris. 

 Cyathoseris. 

 Madeepoeidje. 

 Lohopsamnia. 

 Stereopsamnia. 

 Dendracis. 



PORITID^. 



Litharcea. 



MlLLEPOEID^. 



Axojjora. 

 Penxatulidje. 

 Graphularia. 



R 4 



