36 yorkshire naturalists' union. 



Middle Coal Measures. 



Hon — Barnsley Thick Coal. Locs.- — East Gawber Colliery, 

 near Barnsley (Hemingway). Monckton Main Colliery, 

 near Barnsley (Hemingway). Woolley Pit, Darton, near 

 Barnsley (Hemingway). Elsecar,- near Barnsley (Artis, 

 type). 

 Hor. — ? Loc. — Kirkheaton, near Huddersfield (Tindall). 

 Var. dentata Bgt. (sp.). 



Pecopteris dentata Brongt, Hist. d. ve'get. foss., p. 346, pis. 



cxxiii-cxxiv. 

 Dactylotheca dentata Zeiller, Flore foss. d. bassin houil. d. 

 Valen., p. 196, pi. xxvi, figs, i, 2; pi. xxvii, figs, i — 4; 

 pi. xxviii, figs. 4, 5 (includes variety deltcatula). 



Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Loc. — East Gawber Colliery, 

 near Barnsley (Hemingway). 

 Var. delicatula Brongt. (sp.). 



Pecopteris delicatula Brongt, Hist. d. veget. foss., p. 349, pi. 



cxvi, fig. 6. 

 Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Loc. — Monckton Main 

 Colliery, near Barnsley (Hemingway). 



Remarks. — The Dactylotheca (Pecopteris) dentata Bgt. 

 I believe to be only a variety of Dactylotheca plimiosa Artis 

 sp. The fruit of the fern to which Brongniart gave the 

 name of dentata has been described by Zeiller. 



PECOPTERIS Brongt. 

 Pecopteris (Asterotheca) miltoni Artis sp. 

 Filicites iniltotii Artis, Antedil. Phyt., pi. xiv. 

 Pecopteris 7niltom Kidston, Trans. Roy. Soc. Edin., vol. 



xxxiii, p. 374. 

 Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Locs. — East Gawber Colliery, 

 near Barnsley (Hemingway). Monckton Colliery, near 



Geol. Trans. Y.N.U., i8S8(pub. 1890). 



