51 



PLATE XXV. 



Pecopteris pennaeformis. 



Brong. 



Another species of the same general character as the 

 three last. Closely allied to Pecopteris dentata this form 

 appears to differ from it, as the authors of the " Fossil 

 Flora " remark, solely almost in the absence of crenelling 

 of the lobes. 



This specimen is also from the Bensham shale in 

 Jarrow Colliery. 



The drawing (by Prior) and the Plate are both of the 

 natural size. 



