620 GEOLOGY OF OHIO. 



SPONGES. 

 Gbnus Stkomatopora. DeBlaiuville. 



Stromatopora granulosa, Nich. 



" Sandushyensis, Rominger (unpublished.) 



Note— These two species may prove identical. 



" pondei'osa, Nich. 



" concentrica, Goldf. ? 



" substnatella, Nich. , 



" nodulata, Nich. 



Genus Syeingostroma. Nicholson. 



Syringostroma densa, Nich. 



" colmnnaris, Nich. 



CORALS. 



Genus Favosites. Lamarck. 



Favosites gofhlandica, Lamarck. 

 " hasaltica. 



" twrbinata, Billings. {F. Tiemisphericum, Yaudell?) 

 " pleurodictyoides, Nich. 

 " • polymorpha, Goldf. 

 " invaginata, Nich. 



Genus Phillipsastkea. D'Orb. 



FhilUpsaairea? gigas, Owen. 



Genus Acervularia. Schweigger. 



Acervularia profunda, Hall. 



" Davidsoni, E. and H. 



Genus Eridophyllum. Edwards and Haisue. 



Eridopliyllum sMetum, B. and H. 



" Vernmdlamim, E. and H. 



Genus Syringopoea. Goldfuss. 



Springopora Hisingeri, Billings. 

 " Maelurei, Billings. 



Genus Heliophylldm. HaU. 



Seliophyllum Malli, E. and H. 



Genus Cyathophyllum. Goldfuss. 



Oyathophyllum rugosum, Hall. 

 " Zenkeri, Billings. 



Genus Zaphrentis. Rafinesque. 



Zaplirentis gigantea, E. and H. 

 " pi-olifica, Billings. 

 " multilamellata, Nich. 

 " Wortheni, Nich. 



" Edwardsi, Nich. 



