kiDStON: YORKSHIRE CARi50NiFER0tJS FLORA. 39 



Hor. — Silkstone Coal. Locs.- — Church Lane Colliery, near 

 Barnsley (Hemingway). Barrow Colliery, near Barnsley 

 (Hemingway). 



Hor. ? — I.oc. — Alverthorpe, near Huddersfield (Artis, type). 

 Note. — A very common species. 



Alethopteris valida Boulay. 



Alethopteris valida Boulay, Terr, houil. du nord de la France, 

 p. 35, pi. i, fig. 8 ; Zeiller, Flore foss. d. bassin, houil. d. 

 Valen., p. 231, pi. xxxiii, figs, i, 2 ; pi. xxxiv, fig. i. 

 Middle Coal Measures. 



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

 near Barnsley (Hemingway). 



Note. — Only one example has been met with. 



ODONTOPTERIS Brongt. 

 Odontopteris britannica Cutbier. 



Odontopteris britannica Gutbier, Vers. d. Zwick. Schwarzk., 

 p. 68, pi. ix, figs. 8— II ; Weiss., Fossil Flora d. jving. 

 Stk. u. Roth., J). 45, pi. i, fig. 2. 

 Middle Coal Measures. 



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

 Colliery, near Barnsley (Hemingway). Woolley Colliery, 

 Darton, near Barnsley (Hemingway). 

 Odontopteris binervosa Achep. 



Odontopteris binervosa Achepohl, Niederrh.-Wcstfal. Steink., 



p. 118, pi. xxxvi, fig. 5. 

 Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Locs. — North Gawber 

 Colliery, near Barnsley (Hcmingwa)). East Gawber 

 Colliery, near Barnsley (Hemingway). ^Voolley Colliery, 

 Darton, near Barnsley (Hemingway). Low Stubbin 

 Colliery, Rawmarsh, near Rotherham (Carr). 



Remarks. — This species, tiiough not very rare, and 

 occurring in several of the English Coal-l'ields, is seldom 

 represented by large specimens. 



