204 Cincinnati Society of Natural History. 



tangential sections show thick-walled, angular cells, variable 

 in size, and with an occasional spiniform corallite. (The 

 Paleontologist, No. 7, April 16, 1883, p. 57.) 

 Locality. — Paris, K)-. 



34. — M. SUBPULCHELLA Nicholson, 1875. 



Coralluni dendroid; branches compressed or flattened, 

 sometimes partially hollow; surface nearlj- smooth, having 

 somewhat stellate maculse, scarcely elevated, and about a line 

 apart, made up of smaller corallites than the average ; calices 

 large and small, all with moderately thick walls, the larger 

 surrounding the niacuke of smaller cells ; larger calices cir- 

 cular or polygonal ; small ones sub-angular ; spiniform coral- 

 lites few ; corallites thin-walled in the central region, becom- 

 ing thicker toward the surface and the walls seemingly fused 

 together ; complete horizontal tabulae developed in all parts 

 of the coralluni, but much more numerous in the thickened 

 peripheral portion than elsewhere; interstitial tubes more 

 closely tabulate than the large ones. {Chcrtetes subpulchella 

 Nicholson, Pal. of Ohio, vol. 2, 1875, p. 196; Genus Montic, 

 1881, p. 134.) 



Locality. — Cincinnati, Ohio. 



Remarks. — This species is to be mainly distinguished from 

 other dendroid forms by the star-shaped maculae, made up of 

 smaller cells than the average, and thickly scattered over the 

 surface of the flattened, sub-frondose branches. 



35. — M. R.VMOSA D'Orbigny, 1850. 



Coralluni dendroid, branches cylindrical or elliptical, divid- 

 ing dichotomousl)', varying from one to three or four lines in 

 diameter; surface with numerous conical or slightly-elonga- 

 ted monticules, at intervals of one-half a line to one line 

 apart, not occupied by specially large or small corallites; 

 calices sub-polygonal, the walls thickened at the mouths, the 

 larger calices completely surrounded by smaller ones in a 

 single row and often isolating the large ones; variable in size 

 and shape ; both sets of corallites with complete, horizontal 



