90 CATALOGUE OF POSSIL PLANTS 



169.— Pecopteris serra, L. et H. Type specimen, F. F. , pi. 107. 



Large rachis on same slab. Approaches too closely to the 

 last to be separated as a species. " Pecopteris serra " on the 

 label, but not Hutton's writing. New label by Hutton, 1856. 

 Loc— Whitehaven Coal-field. (H. C. 270). 



Pemarks. — There is much uncertainty about the localities of 

 the specimens enumerated above. In my opinion No. 165 is 

 from the Somersetshire Coal-field; No. 166 from the shale above 

 the High-Main, Jarrow ; No. 167 may be from Jarrow, but not 

 from High-Main shale; No. 168 is uncertain; and No. 169 from 

 Whitehaven Coal-field. Most of these, I think, have been bor- 

 rowed specimens, as they have "to be returned" on them. 

 Above I have recorded the ~F. F. localities with doubt. No. 165, 

 Sph. caudata, L. et H., is too closely allied to Pecop. acuta, 

 Brongt., judging from Brongniart's figure, to be separated from 

 it. The other specimens are also identical with Brongniart's 

 P. dentata. I cannot find any character by which Sphen. crenata, 

 L. et H., can be separated from the latter. The Type-specimen 

 from the Whitehaven Coal-field, ~E. F., pi. 100, 101, is preserved 

 in the Collection of the Natural History Society's Museum, 

 having the Type-specimen of Schizopteris adnascens, L. et H., 

 twining round the stem of S. crenata. The specimen of S. 

 crenata is not so distinctly impressed on the shale as to shew the 

 sharp outline of Hutton's figure, pi. 101. It was sent from the 

 Whitehaven Coal-field by the same gentleman that sent the 

 specimen, Pecop. serra, L. et H. This latter specimen was first 

 labelled pennceformis, and then altered, by Lindley probably, to 

 serra. It seems to be the prevailing opinion that all these forms 

 are referable to Artis' Type quoted above. Though some of the 

 localities given by Hutton, are uncertain, yet this fern certainly 

 occurs in this Coal-field, both in the Jarrow district and in the 

 lower seams near Bishop's Auckland. 



