144 Cincinnati Society of Natural History. 



MANUAL OF THE PALEONTOLOGY OF THE CIN- 

 CINNATI GROUP. 



Bv Joseph F. James, M. Sc, F. G. vS. A., etc. 



Part I\'. 



(Continued from Vol. xv, p. i(X5.) 



(Read by Title, January 3, 1^93.) 



Section 2. — Madreporaria riigosa. 



This section includes such well-known forms as Zaphrentis, 

 Cxathophylhim and Streptelasvia. Its general characters are 

 given by Nicholson as follows : ^- Coralluni simple or com- 

 posite, composed of compact, solid sclerenchyma, the theca 

 complete and imperforate ; septa usually well developed and 

 lamellar, with smooth or dentated edges ; sometimes rudi- 

 mentary, generally alternately long and short ; mode of in- 

 crease in the composite corolla mosth' by lateral or calicular 

 budding. Three of the genera of our corals are referred here, 

 viz., Zaphrnitis, Slreptelasma and Palceophylhnn. 



Genus i. — Z.\phrentis, Rafinesque and Clifford, 1820. 



"Corallum simple and trochoid ; calice deep, septal fossula 

 strongly developed and occupying the place of one of the 

 .septa ; no columella ; tabukc moderately developed and bear- 

 ing on their upper surface a series of septa, which extend 

 from the wall to the center of the visceral chamber, and are 

 denticulate all along their calicular edge." (Ann. Sci. Phys. 

 de Bruxelles, tome v, 1820, p. 234; Ed. and Haime, Brit. Foss. 

 Cor. (Pakcont. vSoc. Pub., (London, 1850, p. Ixv.) 



Remarks. — The above description is not the original one of 

 Rafinesque and Clifford, this not being accessible, but the 



"Mamial of I'ala'f)iilol.. isx'.i. vol. 1. \>. 'J7ii. 



