68 



tabulae and short septa, but it is widely separated from C. toi- 

 quiuni ; the only other form yet defined, from the Coal Measures 

 of this country, not only in size and shape, but in the internal 

 structure and form of the calyx. 



Found in the Upper Coal Measures, at Kansas City, Missouri, 

 and now in the collection of \vm. F. E. Gurley. 



Family FAVOSITIDiE. 



MICHELINIA BRANNERI, n. Sp. 



Plate VII, Fig. 12, side view; Fig. 13, summit view. 



About half the length of our specimen is covered with an epi- 

 theca ; transversely, it is somewhat elliptical and the summit is 

 convex. However, we would infer, that the species is more or 

 less globular, ovoid or elliptical, in the upper part, and has an 

 irregularly convex summit. The lower part expands more or less 

 from the base, or place of attachment to some foreign object, 

 and is covered with a dense, transversely wrinkled epitheca. 

 The corallites are polygonal and extremely variable in size, 

 some are minute and others are very large; they open in all 

 directions, and some parts of the corallum are more prominent 

 than other parts, which produces an irregular summit. The 

 calyces are deep, and the walls are thin, even where the 

 wrinkled epitheca unites with the corallites, the margin is ex- 

 ceedingly thin. 



This species is evidently related to M. eugenew, but we think 

 it is a larger species and distinguished by having larger coral- 

 lites, deeper calyces, more dense and strongly wrinkled epitheca 

 and a larger base. 



Found in the Coal Measures, at Danville, Illinois, and now in 

 the collection of Wm. F. E. Gurley. The specific name is in 

 honor of Prof. J. C. Branner, of Leland Stafford, Jr.. University. 



