PLATE XV. 



A large, partially exfoliated specimen of Actinostroma stellulatum, Nich., of 

 the natural size, from the collection of Mr. Vicary. Middle Devonian, Chircombe 

 Bridge Quarry, Newton Abbot, Devonshire. So far as the British Devonian 

 series is concerned, this beautiful specimen is probably unique, but very similar 

 examples occur in the Eifel. It belongs to a variety of A. stellulatum, in which 

 the ccenosteum is massive and the surface is covered with small pointed eminences 

 corresponding with the centres of the astrorhizas. (Page 140.) 



