89 



PLATE XLV. 



Spiropteris. 



SCHIMPEE. 



Under this general name the few Plates showing fossil 

 ferns in vernation can be conveniently grouped. It is 

 obviously impossible, in the great majority of cases, to 

 even attempt the specific determination of immature 

 fragments of this kind. The present is a beautiful 

 example of the kind, the original being one-fifth larger 

 than our figure. This is perhaps a Sphenopterid form 

 in vernation. 



The drawing, by Priok, is one of that artist's happiest 

 delineations, and is scarcely done justice to in our auto- 

 type, although, of course, every detail is faithfully 

 reproduced. 



The specimen comes from the Newcastle coal-field, no 

 further details as to locality and horizon being forth- 

 coming. 



