TAB. XL. 

 CORALS FROM THE MOUNTAIN LIMESTONE. 



LlTHOSTROTION JUNCEUM (p. 196). 



Fig. 1. Side view of part of a tuft ; natural size. 

 1 a. Calice, magnified. 



1 b. Vertical section of three Corallites, magnified. In one of these "the columella 



has disappeared. 



LlTHOSTROTION MARTINI (p. 197). 



Fig. 2. Side view of a tuft ; natural size. 



2 a. Calice, magnified. 



2 b. A transversal section of a specimen, in which the inter mural spaces are filled 



up with extraneous matter ; natural size. 

 2 c. A vertical section of the same specimen ; natural size. 

 2 d. A horizontal section of a calice, magnified. 

 2 e. Part of a vertical section of a Corallite, magnified. 

 2/. A similar Corallite, but destitute of its columella. 

 2//. Vertical section not passing through the central axis, magnified. 



