FROM THE HFTTON COLI/RCTTON. 0-5 



is undeniable proof, if such proof were required, that violent 

 storms occurred which played havoc with the young and tender 

 vegetation of the Coal-measure period ; and also a most interest- 

 ing proof that the ferns of the olden times followed the same 

 mode of vernation as most of their representatives do at the 

 present day. Plate 2, f. 1, is an example. 



Tribe. PECOPTERIDE^. 



ALETHOPTERIS, Sternberg. 



Alethopteris lonchitica, Schlotheim sp. 



Type — Pilicites lonchiticus, Schloth., Plor. d. Vorw., 



pi. 11, f. 22. 

 Pecopteris lonchitica, Brongt., Hist. Yeg. Foss., pi. 84. 



,, ,, L. et PL, Poss. Flora, pi. 153. 



,, MantelU, L. et PL, Poss. Plora, pi. 145. 



,, ,, Brongt., Hist.Yeg.Foss.,pl.83,f.3,4. 



,, urophylla, Brongt., Hist. Yeg. Poss., pi. 86. 

 Alethopteris vulgatior, Sternb., Yers. I., pi. 53, f. 2. 

 Pecopteris heterophylla, L. et H, Poss. Plora, pi. 38. 

 Alethopteris lonchitidis, Lebour, 111. Poss. Pits., pi. 24. 

 Alethopteris MantelU, Zeill., Yeg. Poss. Terr. Houill., 



pi. 163, f. 3, 4. 



151.— Pecopteris lonchitica, L. et H. Type specimen, F.F. , pi. 153, f. 1. 

 Terminal portion of a pinna, leaves simple and well preserved. 

 Hntton's label, "Pecopteris. Jarrow, Bm." 

 Loc. — Shale above the Bensham Seam, Jarrow. (H.C. 292). 



152. L. et H. Type specimen, F. F., pi. 153, f. 2. 



Portion of a larger pinna, not quite perfect at the ends; 

 leaves large and well preserved. Hutton's label, " Pecopteris 

 lonchitica. Jarrrow, Bm." 

 Loc— Shale above the Bensham Seam, Jarrow. (H. C. 293). 



153. Terminal portion of a large pinna, one foot long, nearly- 

 perfect, with numerous lesser pinna?. Hutton's label, " Pecop- 

 teris heterophylla. Felling, L. M. D." 

 Loc— Shale above the Low-Main Seam, Felling. (H.C. 289). 



Remarks. — This generally-distributed fern appears to be com- 

 mon in some localities and zones of this Coal-field and rare in 

 others, and to vary in shape from the long, narrow-pinnuled 

 variety, A. MantelU, to the larger and typical A. lonchitica. 



