37 



PLATE XVIII. 



Pecopteris. Sp. 



The drawing from which this Plate is taken is marked 

 " Pecopteris abhreviata" in Hutton's handwriting. This 

 fern very probably belongs to the very variable group 

 comprising the species Pecopteris poly morpha and Pecop- 

 teris Miltoni) of which also the type Pecopteris ahhreviata 

 forms part. The latter variety has never, to our know- 

 ledge, been found in the Northern coal-field, but Pecop- 

 teris (or Cyatheites) Miltoni is recorded from the High 

 Main shale whence the present specimen was obtained at 

 the Felling Colliery. 



The drawing is by Peioe, and is, like the Plate, of the 

 size of nature. 



Referring to this example is a note by Dr. Lindley : — 

 "Too vague for determination." (Hutton MSS.) 



