65 



PLATE XXXII. 



Sphenopteris linearis. 



Steenb. Var. 



This pretty fern appears to hold an intermediate posi- 

 tion between the typical form of this species and the 

 Sphenopteris ohovata of the " Fossil Flora," Plate 109 

 (= Adiantides microphyllus (Goepp.), a Cyclopterid form). 

 The lobes are, in the present case, in nowise wedge- 

 shaped, but the absence of the details of venation pre- 

 cludes detailed description. 



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

 natural size. 



The specimen comes from the Bensham shale, Jarrow 

 Colliery. 



