200 Cincinnati Society o/ Natural History. 



Both figures and description show this. The description is 

 as follows: 



Batosloma variabile Ulrich. Corallum variable, encrusting, 

 lobate, digitate, ramose and sub-frondescent ; surface smooth, 

 showing slightly elevated clusters of larger shells; calices 

 angular; walls of corallites in axial region thin, faintly and 

 irregularly flexuous; corallites polygonal, approaching the 

 surface in a gradual curve and mainly in contact, the divis- 

 ional lines between those adjoining sharply marked; inter- 

 stitial cells angular, varying in number; tabula few in the 

 axial region, three or four in the cortical region, one or two 

 nearest the surface concave ; more numerous in the intersti- 

 tial cells and in all cases complete ; spiniform tubuli fairly 

 numerous, usually situated at the angles between the coral- 

 lites. 



28. — M. WHiTFiELDi James, 1881. 



Corallum dendroid, variable, very irregularly branched, the 

 branches either close together or some distance apart ; often 

 rounded at the ends, sometimes swollen or flattened as if 

 hollow ; varying from ]/% to ^ of an inch in diameter ; sur- 

 face smooth; calices variable in size and form, polygonal, 

 oval, circular, pentagonal, etc.; five to eight in the space of 

 one line ; sometimes groups of calices larger than the average 

 scattered irregularly over the surface ; also groups of from 

 six to ten small interstitial tubes ; walls of corallites thin ; 

 longitudinal sections show walls to be transversely wrinkled, 

 and more or less sinuous horizontally ; tabulae few and at 

 variable distances apart; corallites growing in a longitudinal 

 direction, then bending and opening obliquely at the surface. 

 (The Paleontologist, No. 5, June 10, 1881, p. 34.) 



Locality. — Cincinnati, O. 



29. — M. ANDREWSii Nicholson, 1881. 



Corallum variable, but generally dendroid, branches sub- 

 cylindrical, two to six lines in diameter, flattened, expanded 

 or inosculating; surface with clusters of from five to seven 

 cells slightly larger than the average, and though elevated, 

 yet not enough to form monticules ; calices polygonal or sub- 



