PLATE 2. 



Favosites alpenensis Winchell 

 Page 53. 



Fig. 1. Almost spherical corallum from the Mineola of Ralls County. 



Fig. 2. An elongate corallum from the Mineola of Ralls County. 



Fig. 3. A corallum from the Mineola of Ralls County. About f natural size. 



Favosites sp. undet. 



Figs 4 and 5. Top and side views of a corallum. (Devonian of Callaway County, for- 

 mation uncertain.) (X 2/3.) 



Chonophyllum ellipticum Hall and Whitfield 

 Page 51. 



Fig. 6. Inside of the cup of the specimen shown in figure 2, of plate 1. 



