620 GEOLOGY OF OHIO. 
SPONGES. 
GENUS STROMATOPORA. DeBlainville. 
Stromatopora granulosa, Nich. 
ne Sanduskyensis, Rominger (unpublished.) 
NoTE—These two species may prove identical. 
rf ponderosa, Nich. 
a concentrica, Goldf. ? 
a substriatella, Nich. 
a nodulata, Nich. 
GENUS SYRINGOSTROMA. Nicholson. 
Syringostroma densa, Nich. 
ot columnaris, Nich. 
CORALS. 
GENUS FAvositTEs. Lamarck. 
Favosites gothlandica, Lamarck. 
‘¢  basaltica. 
twrbinata, Billings. (1. hemisphericum, Yandell?) 
‘¢ _ pleurodictyoides, Nich. 
‘polymorpha, Goldf. 
‘  wnvaginata, Nich. 
GENUS PHILLIPSASTREA. D’Orb. 
Phillipsastrea? gigas, Owen. 
| GENUS ACERVULARIA. Schweigger. 
Acervularia profunda, Hall. 
pe Davidsoni, HK. and H. 
GENUS ERIDOPHYLLUM. Edwards and Haisne. 
Eridophyllum strictum, E. and H. 
a Verneuilanum, EK. and H. 
GENUS SYRINGOPORA. Goldfuss. 
Springopora Hisingeri, Billings. 
e¢ Maclurei, Billings. 
GENUS HELIOPHYLLUM. Hall. 
Heliophyllum Halt. Hi. and H. 
GENUS CYATHOPHYLLUM. Goldfuss. 
Cyathophyllum rugosum, Hall. 
ef Zenkeri, Billings. 
GENUS ZAPHRENTIS. Rafinesque. 
Zaphrentis gigantea, EK. and H. 
te prolifica, Billings. 
5G multilamellata, Nich. 
oe Wortheni, Nich. 
oe Edwardsi, Nich. 
