TAB. XLVII. 



CORALS FROM THE DEVONIAN FORMATION. 



Heliolites porosa (p. 212). 



Fig. 1. A vertical section made through a globular specimen found at Torquay, and 



belonging to the collection of Mr. Bowerbank ; natural size. 

 ]«, Id, Ic. Portions of different transverse sections, showing the variations in the 



size of the calices. Figs, la and Ic are from different parts of the same 



specimen ; natural size. 

 Id. A magnified view of part of the specimen figured in la, showing the structure 



of the csenenchyma and the septa, 

 le. A magnified view of a portion of the vertical section, fig. 1, showing the 



tabulae of the corallites and the dissepiments of the columnal caenenchyma ' 

 1/. A specimen of the same species, in which the substance of the coral has been 



destroyed and the visceral chambers of the corallites filled up with 



extraneous matter, constituting small prominent cylinders. Found at 



Torquay by Mr. Pengelly. 



Battersbyia in^qualis (p. 213). 



Fig. 2. A transverse section polished ; natural size. Specimen found at Teignmouth, 

 and belonging to the collection of Dr. Battersby. 

 2a. A specimen showing the septa ; natural size. 

 2d. The same, magnified. 



Favosites Goldfussi (p. 214). 



Fig. 3. Vertical section poHshed ; natural size. Specimen from Torquay, belonging to 

 the collection of Mr. Bowerbank. 

 Sa. Transverse section magnified, and showing some well-preserved calices with 



their septa. 

 U. A fractured specimen, showing the prismatic form of the corallites ; natural size. 



(Bowerbank collection.) 

 3c. The upper surface of the same specimen ; natural size. 



