756 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
6x12 Platonea 
Centronea 
Erkosonea 
Pleuronea 
Mesonea 
Fig. 245. — Genera of the Tubuliporidae. 
A. Tubulipora Lamarck, 1S1G. Tubulipora phalangea Couch. 
B. Platonea, new genus. Ovieellecl lobe of Platonea ( Reptotubigera ) phillipsae Harmer. 1915. 
C. Centronea, new genus. Ovicelled specimen of Centronea ( Multitubigera ) micropora 
Reuss, 1869, X 12. 
D. Mesonea, new genus. Frontal with ovicell and dorsal of Mesonea ( Retepora ) radians 
Lamarck, 1816. 
E. Erkosonea, new genus. Frontal and dorsal sides, X 12, of Erkosonea semota, new species 
from the Eocene of Mississippi. 
F. Pleuronea, new genus. Froutal with ovicell and dorsal of Pleuronea ( Idrnonea ) fene- 
strata Busk, 1859. 
G. Tretonea, new genus. Frontal with ovicell and dorsal of Tret07iea levis, new species 
from the Jacksonian of Georgia. 
H. Idrnonea Lamouroux, 1821. Dorsal and frontal with ovicell of Idrnonea atlantica Forbes, 
1859. (After Harmer, 1915.) 
I. Idmidronea, new genus. Frontal, X 12, and dorsal, X 25, of Idmidronea ( Idrnonea ) 
maxill'aris Lonsdale, 1845, from the Eocene of North Carolina. 
