47 



PLATE XXIII. 



Pecopteris serra (?). 

 Lindl. and Hutt. 



This example belongs to the same group as the last 

 (Plate XXII.) from which it differs in more closely 

 appoximating to the Pecopteris serra type. The lobes are 

 more strongly serrated than in the figured specimen 

 already referred to (" Fossil Flora/' Plate 107). 



The original drawing is inscribed in pencil (by 

 Hutton?) u Pecopteris Silesiaca the narrow rachis, how- 

 ever, sufficiently separates it from that form, to which 

 otherwise it bears considerable resemblance. 



The specimen comes from the shale above the Bensham 

 seam, Jarrow Colliery. 



Drawing (by Prior) and Plate are of the natural size. 



