THE FOSSIL FLORA OF THE SOUTH WALES COAL FIELD. 609 



Sigillariae, sp. 



Upper Coal Measures (Upper Pennant Series). 



Locality. — Coalbrook Colliery, Lougher. 



Horizon. — Highest Seam in the Series. 



Transition Series (Lower Pennant Series). 



Locality. — Abergorchy, Ehondda Valley. 

 Horizon. — Abergorchy Seam. 



Sigillaria tessellata, Brongt. 



Sigillaria tessellata, Brongt., Hist. d. veget. foss., p. 436, pi. clvi. fig. 1, pi. clxii. figs. 1-4. 

 * Sigillaria tessellata, Kidston, Trans. Boy. Soc. Edin., vol. xxxvii. p. 348. 



Upper Coal Measures (Upper Pennant Series). 



Locality. — Coalbrook Colliery, Lougher. 



Horizon. — Highest Seam in the Series. 



Transition Series (Lower Pennant Series). 



Locality. — Cwmbwrla, Swansea. 



Horizon. — Hughes' Vein. 

 Locality. — Bwllfa Dare Colliery, Aberclare. 



Horizon. — Graig Seam (Abergorchy). 



Middle Coal Measures (White Ash Series). 



Locality. — Bwllfa Dare Colliery, Aberclare. 



Horizons. — No. 1 Yard Seam and 4 Foot Seam. 

 Locality. — Merthyr Tydvil. 



Horizon. — (?). 



Sigillaria discophora, Konig., sp. 



*Sigillaria diseopliora, Kidston, Trans. Roy. Soc. Edin., vol. xxxvii. p. 345. 

 Lepidodendron discopliorum, Konig., Icones foss. seetiles, pi. xvi. fig. 194. 

 Ulodendron majus, L. and H., Fossil Flora, vol. i., pi. v. 

 Ulodendron minus, L. and H., ibid., vol. i., pi. vi. 



Middle Coal Measures (White Ash Series). 



Locality. — Beaufort. 

 Horizon. — (?). 



