34 yorkshire naturalists' union. 



Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Loc. — Woolley Colliery, 

 Darton, near Barnsley (Hemingway). 



Remark. — Apparently rare in the Yorkshire Coal 

 Field. 



URNATOPTERIS Kidston. 

 Urnatopteris tenella Brongt. sp. 



Sphenopteris tenella Brongt., Hist. d. veget. foss., p. i86, pi. 



xlix, fig. I. 

 Sphenopteris sp. Lebour, Illustrations of Fossil Plants, pi. 



XXX ix. 

 Ell sphenopteris tenella Kidston, Proc. Roy. Phys. Soc. Edin., 



vol. vii, p. 129, pi. i, figs. I — 6. 

 Urnatopteris tenella Kidston, Quart. Journ. Geol. Soc, vol. 

 A P- 594, 1882. 

 Loc. — Mines of Yorkshire (Brongniart). 



Remarks. — This species was described by Brongniart 

 from a drawing sent him by Dr. Taylor, but the only locality 

 given is Yorkshire. I have not yet met with any Yorkshire 

 specimens of this fern, but it occurs in the Northumberland 

 Coal Field and in some of the Scotch Coal Fields. As far 

 as I am aware it has only been discovered in the Lower 

 Coal Measures. The type is preserved in the British 

 Museum, South Kensington. The fruit of this species was 

 described by myself in 1882. 



MARIOPTERIS Zeiller. 

 Mariopteris muricata Schloth. sp. 



Schlotheim, Flora d. Vorwelt, pi. xii, figs. 21 and 23, 1804. 

 Filicites muricatus Schloth., Petrefactenk., p. 409. 

 Fee. muricata Brongt., Hist. d. veget. foss., p. 352, pi. xcv, 



figs. 3, 4, P^- xcvii. 

 Mariopteris muricata Zeiller, Flore foss. d. bassin. houil. d. 

 Valen., p. 173, pi. xx, figs. 1—4 ; pi. xxi, fig. i ; pi. xxii, 

 figs. I, 2 ; pi. xxiii, fig. i (includes varieties). 



Geol. Trans. Y.N.U., iS88(pub. 1890). 



