66 



MATONIDnjM. 



their identity ivitli Matonidium. The position of the pinnae shows 

 a gradual convergence towards a point of attachment. 



The elliptical or oval sori are distinctly shown on the lower 

 surface of the pinnules. Ecclesbourne. Eufford Coll. 



Ficr. 7. — Matonidium Gopperti (Ett.), shoTving portion of a fertile 

 pinna («) (V. 2218). 



V. T21. Eachis very prominent ; some of the pinnules with 

 sori. Ecclesbourne. Daivso7i Coll. 



V. 2208. Very similar to V. 2218. Pieces of six pinnas. Note 

 the gradual convergence towards the original point of attachment to 

 the stout rachis. Ecclesbourne. Eufford Coll. 



V. 2211. Shows the convergence to a common point of attach- 

 ment of imperfectly preserved pinnae. Ecclesbourne. Eufford Coll. 



V. 2216. Small fragments of ? fertile pinnae. Ecclesbourne. 



Eufford Coll. 



