60 CATALOGUE OF FOSSIL PLANTS 



pinnae of perhaps^a large frond, which was bifurcated after the 

 manner of other ferns from the Calciferous Sandstone or Culm 

 formation. There can be no doubt about the identity of this 

 with the Sphen. crassa of the same authors, as has already been 

 pointed out by Mr. KMston, but S. crassa represents a lower part 

 of the frond with rachial pinnae, and the same part of the same 

 species is also given by Stur under the specific names Archceop- 

 teris lyra, in which the rachial pinnae are a little more developed, 

 and Sph. Kiovoit%ensis, Sph. Falkenhaini, Archceopteris TschermaM, 

 and Archceopteris Datvsoni, are only portions of different parts of 

 the frond of the same species. Eremopteris Macconochii, of Kid- 

 ston, from the Eskdale beds, is undoubtedly the same ; and here 

 also must be ranged, notwithstanding the localities given, Pecop- 

 teris marginata and Sphenopteris cuneolata of Lindley and Hutton. 

 I am quite aware that it is stated in the " Fossil Mora" that 

 the Type of Sph. cuneolata was from the "Newcastle Coal-field," 

 and that Pecopteris marginata is " a fern of frequent occurrence 

 in the Coal of the North of England," but no one can shew a 

 specimen of either of the last two species that has been obtained 

 from the Northumberland and Durham Coal-field. Both these 

 impressions, in fact, belong to that striking group of ferns which 

 so far has been found only in and are peculiar to the Calciferous 

 Sandstone and Culm or Lower Carboniferous. 



[Sphenopteris affinis, Lindley et Hutton. 



Type — Sphenopteris affinis, L. etH., Foss. Flora, pi. 45. 



Sphenopteris affinis, Hibbert, Trans. Eoy. Soc.Edin., Vol. 13, 



pi. 6, f. 4; pi. 5 bis. 

 ,, linearis, Brongt., Hist. Veg. Foss., pi. 54, f. 1. 



„ „ Hibbert, Trans. Boy. Soc. Edin., Vol. 13, 



pi. 6, f. 3. 

 ? Adiantides Machanehi, Stur, Culm Flora, Heft I., taf. 17, 



f. 5, 6. 



Remarks. — There were several specimens of this species in 

 the Hutton Collection, but none of them were selected for the 

 Natural History Society. Hutton's Type-specimen, communi- 

 cated by Mr. Withani, is probably in the Witham Collection at 



